15 Easy Cookie Bar Recipes for Potlucks (October 2026)

Updated for October 2026

15 easy cookie bar recipes for potlucks is the list I keep coming back to in October, when every Sunday has a signup sheet and I am the person who volunteers. A cookie bar is a full pan of cookie dough spread thin, baked once, and cut into even squares, so one 9×13 pan gives you 12 to 24 identical portions with no scooping, no second batch, and nothing to assemble at the host’s house.

Every recipe below is written for a home cook with a stand mixer or a wooden spoon, and most are done in under an hour including cooling. If you want the shorter versions, the 13 easy homemade cookie recipes and the old fashioned cookie roundup cover the scooped versions, but bars are what I actually carry across town.

15 Easy Cookie Bar Recipes for Potlucks at a Glance

Time below is the honest total, including the 20 to 30 minutes most bars spend cooling before you can cut them. Difficulty is about the dough, not the baking.

1. Classic Chocolate Chip Cookie Bars

This is the bar I make when I genuinely do not know who is coming. It has a crisp browned edge, a chewy middle, and enough chocolate to satisfy without turning the pan into a brownie.

Yield: 16 bars · Prep: 15 min · Bake: 22 to 25 min · Total: about 55 min · Difficulty: Easy

Allergens: Contains milk, wheat and egg.

Ingredients

• 1/2 cup unsalted butter (113 g), softened
• 3/4 cup granulated sugar (150 g)
• 1/2 cup light brown sugar (100 g), packed
• 1 large egg
• 1 teaspoon vanilla extract
• 1 1/4 cups all-purpose flour (156 g)
• 1/2 teaspoon baking soda
• 1/2 teaspoon fine salt
• 1 1/2 cups semisweet chocolate chips (255 g)

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment, letting it hang over two long sides.
2. Cream the butter and both sugars for 2 minutes, scraping the bowl once, until pale and fluffy.
3. Beat in the egg and vanilla until fully combined.
4. Add the flour, baking soda and salt, and stir just until no dry streaks remain. Overmixing makes them cakey.
5. Fold in the chocolate chips.
6. Press the dough into the pan in an even layer with damp hands, then scatter 1/4 cup of extra chips on top.
7. Bake at 350°F (175°C) for 22 to 25 minutes, until the edges pull from the pan and the center looks matte, not shiny.
8. Cool in the pan on a rack for 25 minutes, then lift out by the parchment and cut into 16 squares.

Tip: Pull the pan while the center still looks a little underdone. The residual heat sets the middle as it cools, and that window is the whole difference between chewy and dry.

Swap it: Use 1 cup chopped dark chocolate instead of the semisweet chips and add 1/2 cup chopped walnuts for an adult version. It also works as a base for the cake mix cookie bars if you are short on time.

Storage: Airtight at room temperature for 4 days, or freeze in layers for up to 3 months. Thaw at room temperature in the container so they do not get condensation.

2. Chocolate Chip Oatmeal Cookie Bars

Rolled oats make this one chewier and sturdier than the classic, which is exactly what you want on a buffet table where a plate sits out for three hours. It also freezes better than most bars.

Yield: 16 bars · Prep: 15 min · Bake: 22 to 26 min · Total: about 55 min · Difficulty: Easy

Ingredients

• 1/2 cup unsalted butter (113 g), softened
• 1 cup light brown sugar (200 g), packed
• 1/2 cup granulated sugar (100 g)
• 1 large egg
• 1 teaspoon vanilla extract
• 1 cup all-purpose flour (125 g)
• 1/2 teaspoon baking soda
• 1/2 teaspoon cinnamon
• 1/2 teaspoon fine salt
• 1 1/2 cups quick or old-fashioned rolled oats (120 g)
• 1 cup semisweet chocolate chips (170 g)

Allergens: Contains wheat, milk, egg and oats. Check that your oats are certified gluten-free if that matters for your table.

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment.
2. Beat the butter, brown sugar and granulated sugar until smooth, about 2 minutes.
3. Mix in the egg and vanilla.
4. Stir in the flour, baking soda, cinnamon and salt until just combined.
5. Fold in the oats and the chocolate chips.
6. Press the dough firmly and evenly into the pan; a thin, sparse layer bakes unevenly.
7. Bake at 350°F (175°C) for 22 to 26 minutes, until the top is golden brown and the center still looks slightly soft.
8. Cool completely in the pan, then cut into 16 squares with a sharp knife.

Tip: Use old-fashioned oats, not instant. Instant oats break down into flour and the bar turns crumbly and thin.

Swap it: Swap the cinnamon for pumpkin pie spice in October, or use dried cranberries and white chocolate chips for a cranberry version.

Storage: Keeps 5 days covered, and the chewy texture actually improves on day two. Freezes up to 3 months.

3. Peanut Butter Chocolate Chip Cookie Bars

One bowl, no mixer, and the shortest ingredient list on this list. It is the bar I make when I sign up for a shift and a school potluck in the same week.

Yield: 20 bars · Prep: 10 min · Bake: 20 to 23 min · Total: about 50 min · Difficulty: Easy

Ingredients

• 1/2 cup unsalted butter (113 g), softened
• 1/2 cup smooth peanut butter (130 g)
• 1 cup granulated sugar (200 g)
• 1/2 cup light brown sugar (100 g), packed
• 1 large egg
• 1 teaspoon vanilla extract
• 1 1/4 cups all-purpose flour (156 g)
• 1/2 teaspoon baking soda
• 1/4 teaspoon fine salt
• 1 cup semisweet chocolate chips (170 g)
• 1/3 cup chopped salted peanuts (45 g)

Allergens: Contains peanuts, milk, wheat and egg. Skip this one if peanut-free tables are in play, or use the sunflower butter swap below.

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment.
2. Beat the butter, peanut butter and both sugars until smooth and creamy, 2 minutes.
3. Add the egg and vanilla and beat again.
4. Stir in the flour, baking soda and salt, then mix in the chocolate chips.
5. Spread the dough into the pan and press it flat, then sprinkle the chopped peanuts over the top.
6. Bake at 350°F (175°C) for 20 to 23 minutes, until the edges are golden and the center is set but still soft.
7. Cool in the pan, then cut into 20 smaller bars, five across and four down.

Tip: Spread the dough with the back of a butter knife and check the corners. Peanut butter dough spreads more than chocolate chip dough and often bakes thin in the corners first.

Swap it: A sunflower-seed butter of the same texture works one for one, which makes this nut-free. For gluten-free, use a 1:1 all-purpose gluten-free flour and reduce nothing else.

Storage: 4 days at room temperature in a sealed container. The surface gets a little less glossy but nobody has ever complained.

4. Salted Chocolate Chip Cookie Dough Bars

Store-bought dough makes this a 50 minute project, and the flaky salt on top is what makes it look like you tried. It is the move for a weeknight when the potluck is tomorrow.

Yield: 16 bars · Prep: 8 min · Bake: 20 to 24 min · Total: about 50 min · Difficulty: Easy

Ingredients

• 1 roll (16.5 oz) refrigerated chocolate chip cookie dough, at room temperature
• 1/3 cup semisweet chocolate chips (57 g)
• 1 tablespoon unsalted butter (14 g)
• 1/2 teaspoon flaky sea salt
• 1 tablespoon granulated sugar (13 g)

Allergens: Contains milk, wheat and egg.

Instructions

1. Heat the oven to 350°F (175°C) and line a 9×13 inch pan with parchment.
2. Remove the dough from the foil and let it soften for 5 minutes, then press it into the pan in an even layer.
3. Melt the butter in a small bowl, stir in the chocolate chips, and let it sit 30 seconds until glossy.
4. Pour the melted chocolate over the dough and spread it to the edges with a spatula.
5. Sprinkle the flaky salt and the granulated sugar evenly.
6. Bake at 350°F (175°C) for 20 to 24 minutes, until the dough layer is pale golden and the edges are set.
7. Cool 25 minutes in the pan, then lift out and cut into 16 squares.

Tip: If the dough puffs up into a dome, press it flat again at the 12 minute mark with the back of a spoon. It should sit level so the top layer can spread.

Swap it: Use sugar cookie dough and melt white chocolate on top instead. Add a spoonful of espresso to the melted chocolate and it tastes like a grown-up bakery.

Storage: Best within 2 days, 4 days at most since the crust softens. Freezing dulls the salted top, so eat these fresh.

5. Coconut Chocolate Chip Cookie Bars

Toasting the coconut first takes three extra minutes and changes everything about this bar. It is a summer recipe, but people ask for it in every season on my table.

Yield: 16 bars · Prep: 15 min · Bake: 22 to 25 min · Total: about 55 min · Difficulty: Easy

Ingredients

• 1 cup sweetened shredded coconut (85 g), divided
• 1/2 cup unsalted butter (113 g), softened
• 1/2 cup granulated sugar (100 g)
• 1/2 cup light brown sugar (100 g), packed
• 1 large egg
• 1 teaspoon vanilla extract
• 1 cup all-purpose flour (125 g)
• 1/2 teaspoon baking soda
• 1/4 teaspoon fine salt
• 1 cup semisweet chocolate chips (170 g)

Allergens: Contains coconut, milk, wheat and egg. Coconut is treated as a tree nut in US labelling, so name it clearly if someone at the table is avoiding nuts.

Instructions

1. Heat the oven to 350°F (175°C). Spread 1/3 cup of the coconut on a lined sheet pan and toast at 325°F (160°C) for 4 to 6 minutes until it smells toasty. Cool it.
2. Turn the oven up to 350°F (175°C) and line a 9×13 inch pan with parchment.
3. Cream the butter and both sugars for 2 minutes until fluffy.
4. Beat in the egg and vanilla.
5. Stir in the flour, baking soda and salt, then fold in 2/3 cup toasted coconut and the chocolate chips.
6. Press into the pan evenly and scatter the remaining toasted coconut on top.
7. Bake at 350°F (175°C) for 22 to 25 minutes, until the edges are golden and the center still looks slightly underdone.
8. Cool in the pan, then cut into 16 squares.

Tip: Toast the coconut but watch it closely. It goes from pale to burnt in under a minute once the sugar starts coloring, and burnt coconut tastes bitter in a finished bar.

Swap it: Use unsweetened coconut and add 1/4 cup more sugar to the dough, or swap semisweet chips for butterscotch or white chocolate.

Storage: 4 days airtight, and the toasted topping keeps it from getting soft. Freezes up to 2 months.

6. Pecan Chocolate Chip Cookie Bars

Toasting the pecans before they go in the dough takes five minutes and is the whole recipe in one step. This is the bar I bring to Thanksgiving and the only one my in-laws ask for by name.

Yield: 16 bars · Prep: 15 min · Bake: 22 to 26 min · Total: about 55 min · Difficulty: Medium

Ingredients

• 1 cup pecans (110 g), roughly chopped
• 1/2 cup unsalted butter (113 g), softened
• 1/2 cup granulated sugar (100 g)
• 1/2 cup light brown sugar (100 g), packed
• 1 large egg
• 1 teaspoon vanilla extract
• 1 1/4 cups all-purpose flour (156 g)
• 1/2 teaspoon baking soda
• 1/2 teaspoon fine salt
• 1 cup semisweet chocolate chips (170 g)

Allergens: Contains pecans, milk, wheat and egg.

Instructions

1. Heat the oven to 350°F (175°C). Toast the pecans on a lined sheet pan for 5 to 7 minutes until fragrant. Cool, then chop roughly.
2. Line a 9×13 inch pan with parchment while the oven is still hot.
3. Cream the butter and both sugars until pale and fluffy, about 2 minutes.
4. Beat in the egg and vanilla.
5. Stir in the flour, baking soda and salt, then fold in the chocolate chips and three quarters of the toasted pecans.
6. Press the dough into the pan evenly and scatter the rest of the pecans on top.
7. Bake at 350°F (175°C) for 22 to 26 minutes, until the edges are deep golden and the center looks matte.
8. Cool completely, then cut into 16 squares with a serrated knife, sawing gently so the nuts do not drag.

Tip: Chop the pecans no finer than a rough chop. Finely ground nuts release their oil into the dough and the bar bakes short and crumbly.

Swap it: Walnuts work identically and are usually cheaper. For a nut-free version, use 1 cup toasted pumpkin seeds and keep everything else the same.

Storage: 4 days at room temperature. Pecans go slightly soft next day, which most people prefer anyway. Freezes up to 3 months.

7. Apple Cinnamon Cookie Bars

This one is three parts in one pan: a shortbread-style base, a soft apple filling, and a cinnamon crumble that goes on while the filling is still hot. It tastes like a pie and travels like a bar.

Yield: 16 bars · Prep: 25 min · Bake: 40 to 45 min · Total: about 1 hr 15 min · Difficulty: Medium

Ingredients

For the base:

• 1 1/2 cups all-purpose flour (188 g)
• 1/4 cup granulated sugar (50 g)
• 1/2 teaspoon fine salt
• 1/2 cup cold unsalted butter (113 g), cubed

For the apple filling:

• 3 medium apples (about 1 1/2 pounds), peeled and diced small
• 2/3 cup granulated sugar (133 g)
• 2 tablespoons cornstarch (16 g)
• 1 teaspoon cinnamon
• 1 tablespoon lemon juice
• 1 teaspoon vanilla extract

For the topping:

• 1/2 cup all-purpose flour (63 g)
• 1/2 cup light brown sugar (100 g)
• 6 tablespoons cold unsalted butter (85 g), cubed
• 1/2 teaspoon cinnamon

Allergens: Contains milk and wheat, and there is no egg anywhere in it, which makes it an easy pick for a table avoiding them.

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment.
2. Whisk the flour, sugar and salt for the base. Work in the cold butter with your fingertips until it looks like coarse crumbs, then press it into the pan in an even layer.
3. Bake the base at 350°F (175°C) for 12 to 14 minutes, until the edges are lightly golden. Cool 10 minutes.
4. Whisk the filling ingredients together, excluding the vanilla, and spread it over the crust.
5. Rub the topping butter into the flour, brown sugar and cinnamon until clumpy, then scatter it over the filling in loose clusters.
6. Bake at 350°F (175°C) for 26 to 30 minutes, until the crumble is deep golden and the filling bubbles thickly at the edges.
7. Stir in the vanilla. Cool at least 45 minutes before cutting, then cut into 16 squares.

Tip: Bake the crust first. A single-layer apple bar with a raw bottom layer steams instead of browning, and you end up with a soggy base that tears when you cut.

Swap it: Pears work as well as apples. Add 1/2 cup chopped pecans to the crumble for a nut version, or use a 1:1 gluten-free flour blend for the base and topping.

Storage: 4 days at room temperature, loosely covered so the crumble stays crisp. Freezes up to 3 months, though the crumble softens on thawing.

8. Pumpkin Chocolate Chip Cookie Bars

Pumpkin replaces some of the butter and adds a full cup of moisture, which is why these stay soft for days instead of going stale on the drive over. They are cakey where a blondie is fudgy.

Yield: 16 bars · Prep: 12 min · Bake: 24 to 28 min · Total: about 50 min · Difficulty: Easy

Ingredients

• 1/2 cup unsalted butter (113 g), softened
• 1 cup granulated sugar (200 g)
• 1 large egg
• 1 teaspoon vanilla extract
• 3/4 cup all-purpose flour (94 g)
• 1 teaspoon baking soda
• 1 teaspoon pumpkin pie spice
• 1/2 teaspoon fine salt
• 1 cup pure pumpkin (245 g), packed, not the pie filling
• 1 cup semisweet chocolate chips (170 g)

Allergens: Contains milk, wheat and egg.

Instructions

1. Heat the oven to 350°F (175°C) and line a 9×13 inch pan with parchment.
2. Cream the butter and sugar for 2 minutes until light.
3. Beat in the egg and vanilla, then stir in the pumpkin until smooth.
4. Add the flour, baking soda, spice and salt and stir until just combined.
5. Fold in the chocolate chips, spread into the pan, and smooth the top with a spatula.
6. Bake at 350°F (175°C) for 24 to 28 minutes, until a toothpick inserted in the center comes out with moist crumbs and the edges pull from the pan.
7. Cool 25 minutes in the pan, then cut into 16 squares.

Tip: Use pure pumpkin, not pumpkin pie filling. Pie filling is already sweetened and spiced, and you will end up with a bar so sweet nobody wants a second square.

Swap it: Use 1/2 cup canned pumpkin plus 1/4 cup mashed banana to lighten the color. For gluten-free, a 1:1 flour blend works with no other changes.

Storage: 5 days covered at room temperature, and they are better on day two. Freezes up to 3 months.

9. Blueberry Lemon Cookie Bars

The lemon does double work here: it seasons the crust and keeps the glaze from tasting like plain sugar. Frozen blueberries work, and the jammy pockets they leave are the best part.

Yield: 16 bars · Prep: 20 min · Bake: 32 to 36 min · Total: about 1 hr · Difficulty: Medium

Ingredients

For the crust:

• 1 1/4 cups all-purpose flour (156 g)
• 1/4 cup granulated sugar (50 g)
• 1/2 teaspoon fine salt
• 8 tablespoons unsalted butter (113 g), cold, cubed
• 1 tablespoon lemon zest

For the filling:

• 2 cups blueberries (280 g), fresh or frozen
• 2/3 cup granulated sugar (133 g)
• 2 tablespoons cornstarch (16 g)
• 1 tablespoon lemon juice

For the glaze:

• 1 cup powdered sugar (120 g)
• 2 tablespoons milk
• 1 teaspoon lemon juice
• Finely grated zest of 1 lemon

Allergens: Contains milk and wheat. Dairy-free milk makes the glaze dairy-free.

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment.
2. Whisk the crust flour, sugar, salt and lemon zest, then cut in the cold butter with a pastry cutter until the mixture holds when squeezed.
3. Press the dough into the pan and bake at 350°F (175°C) for 12 to 14 minutes, until the edges are golden. Cool 10 minutes.
4. Whisk the sugar, cornstarch and lemon juice together, add the blueberries, and spoon the filling over the crust.
5. Bake at 350°F (175°C) for 20 to 24 minutes, until the berries have popped and the filling looks glossy and thick.
6. Cool completely. Whisk the glaze ingredients and drizzle it over the bars, letting it run to the edges.
7. Cut into 16 squares with a thin knife, cleaning the blade between cuts.

Tip: Cool the bars fully before drizzling and cutting. Warm filling pulls the glaze into a puddle, and a wet knife is what turns a clean edge into a crushed one.

Swap it: Raspberries or blackberries work. For a nut-free crunch, scatter 1/3 cup toasted pumpkin seeds over the filling just before it goes in the oven.

Storage: Refrigerate 4 days, covered, because the glaze and the berry filling both need it. The bars firm up cold and are best served slightly chilled.

10. Strawberry Vanilla Cookie Bars

Strawberry preserves do the work that fresh fruit cannot, since they thicken without cooking down into a jam. The crust gets its vanilla from bean paste or the extract plus a little cornmeal.

Yield: 16 bars · Prep: 20 min · Bake: 30 to 34 min · Total: about 1 hr 5 min · Difficulty: Medium

Ingredients

For the crust:

• 1 1/4 cups all-purpose flour (156 g)
• 1/3 cup granulated sugar (67 g)
• 1/2 teaspoon fine salt
• 1/2 cup unsalted butter (113 g), cold, cubed
• 1 teaspoon vanilla bean paste or extract

For the filling:

• 1 cup strawberry preserves (320 g)
• 1 tablespoon cornstarch (8 g)
• 1 tablespoon lemon juice
• 1/2 cup fresh strawberries (75 g), diced small, for the top

For the glaze:

• 1/2 cup powdered sugar (60 g)
• 1 tablespoon milk
• 1/2 teaspoon vanilla extract

Allergens: Contains milk and wheat.

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment.
2. Whisk the crust flour, sugar and salt, cut in the butter until crumbly, then stir in the vanilla.
3. Press into the pan and bake at 350°F (175°C) for 13 to 15 minutes, until pale golden. Cool 10 minutes.
4. Stir the cornstarch into the preserves, add the lemon juice, and spread over the crust.
5. Scatter the diced fresh strawberries over the filling.
6. Bake at 350°F (175°C) for 17 to 20 minutes, until the edges bubble and the filling looks set and shiny.
7. Cool for at least 40 minutes, drizzle with the glaze, then cut into 16 squares.

Tip: Do not spread the fresh strawberries into the filling, or they release water and thin the preserves. Layering them on top after spreading keeps the jammy layer intact.

Swap it: Use apricot, cherry or blueberry preserves instead, or skip the fresh fruit entirely for a cleaner two-layer bar.

Storage: Refrigerate 4 days, covered. Bring to room temperature for 20 minutes before serving so the crust is not rock hard.

11. Glazed Lemon Cookie Bars

This is the one bar on the list with no chocolate in it, which is why people who never pick dessert take two. The glaze goes on while the bars are still warm and sets into a thin crackly shell.

Yield: 16 bars · Prep: 15 min · Bake: 28 to 32 min · Total: about 1 hr · Difficulty: Easy

Ingredients

For the bars:

• 1 cup unsalted butter (227 g), softened
• 1/2 cup granulated sugar (100 g)
• 1/4 cup powdered sugar (30 g)
• 1 large egg
• 1 tablespoon lemon zest plus 1 tablespoon fresh lemon juice
• 2 cups all-purpose flour (250 g)
• 1/2 teaspoon baking powder
• 1/4 teaspoon fine salt

For the glaze:

• 1 1/2 cups powdered sugar (180 g)
• 3 tablespoons milk
• 2 tablespoons fresh lemon juice
• Fine lemon zest for the top

Allergens: Contains milk, wheat and egg.

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment.
2. Cream the butter, granulated sugar and powdered sugar until very pale and fluffy, 3 full minutes.
3. Beat in the egg, lemon zest and lemon juice.
4. Add the flour, baking powder and salt and stir just until combined. The dough should look like thick cookie dough, not a soft dough ball.
5. Press it into the pan in an even layer and bake at 350°F (175°C) for 28 to 32 minutes, until the top is pale gold and a toothpick comes out clean.
6. Whisk the glaze ingredients while the bars bake, using less milk if you want a thick drizzle.
7. Cool 15 minutes, drizzle the glaze over, and let it set for 20 minutes before cutting into 16 squares.

Tip: Cream the butter and sugar the full three minutes. Most of the crackle in the glaze comes from air beaten into the butter, not from the sugar quantity.

Swap it: For a shortbread-style version, leave the egg out and add 1/4 cup more flour, reducing the sugar by 2 tablespoons. A pinch of poppy seed in the dough works too.

Storage: Keeps 4 days at room temperature in a single layer. Freezes up to 2 months, though the glaze goes slightly dull on thawing.

12. Peach Almond Cookie Bars

Almond flour gives this a crumbly, shortbread-like base that tastes closer to a cookie than a cake, and sliced peaches stay recognizable instead of turning to jam. It is the prettiest bar on the list, and the least forgiving about timing.

Yield: 16 bars · Prep: 20 min · Bake: 34 to 38 min · Total: about 1 hr 10 min · Difficulty: Medium

Ingredients

For the base:

• 3/4 cup all-purpose flour (94 g)
• 3/4 cup almond flour (90 g)
• 1/4 cup granulated sugar (50 g)
• 1/2 teaspoon fine salt
• 8 tablespoons unsalted butter (113 g), cold, cubed

For the filling:

• 1/4 cup granulated sugar (50 g)
• 2 tablespoons cornstarch (16 g)
• 1 tablespoon lemon juice
• 3 fresh peaches (about 1 pound), peeled and sliced 1/4 inch thick

For the glaze:

• 1 cup powdered sugar (120 g)
• 1/2 teaspoon almond extract
• 2 to 3 tablespoons milk

Allergens: Contains almond, milk and wheat. Both the base and the glaze carry almond, so this one is not adaptable to a nut-free table without replacing both.

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment.
2. Whisk both flours, the sugar and the salt, then cut in the cold butter until the mix clumps when squeezed.
3. Press it into the pan and bake at 350°F (175°C) for 15 to 18 minutes, until the edges are golden. Cool 15 minutes.
4. Whisk the filling sugar, cornstarch and lemon juice, then toss the peach slices in it and lay them over the crust in a single layer.
5. Bake at 350°F (175°C) for 18 to 20 minutes, until the peaches are soft and the juices look syrupy at the edges.
6. Cool for at least 30 minutes, then drizzle with the glaze and cut into 16 squares with a clean thin knife.

Tip: Lay the peach slices flat and in one layer. Overlapping slices steam each other and you get soft fruit sitting on a soggy patch of crust.

Swap it: Use canned peach slices, drained and patted dry, or swap in nectarines. For a nut-free bar, replace the almond flour with 3/4 cup more all-purpose flour and leave the almond extract out of the glaze.

Storage: Refrigerate 4 days, covered. Bring back to room temperature before serving or the fruit firms up and the glaze dulls.

13. Classic Blondie Cookie Bars

A blondie is a chocolate-free cookie bar, which surprises people who assume it is just a brownie in disguise. It is fudgy in the middle, crisp on top, and the one bar here that people ask for seconds of.

Yield: 16 bars · Prep: 12 min · Bake: 22 to 26 min · Total: about 50 min · Difficulty: Easy

Ingredients

• 1/2 cup unsalted butter (113 g), melted and cooled slightly
• 1 cup light brown sugar (200 g), packed
• 1/2 cup granulated sugar (100 g)
• 2 large eggs
• 1 teaspoon vanilla extract
• 1 1/2 cups all-purpose flour (188 g)
• 1/2 teaspoon baking powder
• 1/4 teaspoon fine salt
• 1 1/4 cups butterscotch or white chocolate chips (213 g)
• Flaky sea salt, for the top

Allergens: Contains milk, wheat and egg.

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment.
2. Whisk the melted butter, brown sugar and granulated sugar together until thick and glossy.
3. Whisk in the eggs one at a time, then the vanilla.
4. Add the flour, baking powder and salt and stir until just combined, about 15 strokes.
5. Fold in the butterscotch chips. Batter should be thick and scoopable, not pourable.
6. Smooth the top, scatter the chips that fell to the bottom of the bowl back on the surface, and sprinkle with flaky salt.
7. Bake at 350°F (175°C) for 22 to 26 minutes, until the top is set and shiny and a toothpick in the center comes out with thick moist crumbs.
8. Cool at least 30 minutes in the pan, then lift out and cut into 16 rectangles.

Tip: Do not overmix once the flour goes in. A few lumps are fine, and beating it smooth is the difference between fudgy and cake-like. Use two eggs, not one, for the classic dense texture.

Swap it: Use brown butter cooled to room temperature for a nuttier flavor, or half butterscotch chips and half chopped toffee bits.

Storage: 4 days airtight, and a few of mine have been found still fudgy on day five. Freezes up to 3 months, though the texture firms slightly.

14. S’mores Cookie Bars

One pan, no campfire, and the marshmallows go under the broiler for the last two minutes. It is the fastest bar on this list and the one kids talk about on the drive home.

Yield: 16 bars · Prep: 10 min · Bake: 12 min plus 2 min broil · Total: about 45 min · Difficulty: Easy

Ingredients

• 1 1/2 cups graham cracker crumbs (about 24 full sheets)
• 6 tablespoons unsalted butter (85 g), melted
• 1/4 cup granulated sugar (50 g)
• 1/8 teaspoon fine salt
• 1 1/2 cups semisweet or milk chocolate chips (255 g)
• 4 ounces large marshmallows (115 g), cut in half

Allergens: Contains milk and wheat. Most commercial graham crackers contain milk, so check the label if a dairy-free table is in play.

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment and brush the sides with butter.
2. Stir the crumbs, melted butter, sugar and salt together until evenly moist, then press firmly into the pan.
3. Bake at 350°F (175°C) for 10 to 12 minutes, until the base is golden and smells like a graham cracker.
4. Scatter the chocolate chips evenly over the hot base and let them sit 3 minutes, then spread them into a smooth layer.
5. Arrange the marshmallow halves cut side down over the chocolate.
6. Broil on high for 2 to 3 minutes, watching constantly, until the tops are puffed and toasted golden. Pull them out the moment they darken.
7. Cool 15 minutes, then cut into 16 squares with an oiled knife.

Tip: Stay at the oven during the broil. It goes from pale to scorched in about 20 seconds, and scorched marshmallow tastes burnt no matter what is underneath it.

Swap it: Use leftover Thanksgiving stuffing in place of the graham crumbs and you have a holiday version. Add 1/2 cup chopped peanuts over the chocolate for a crunch.

Storage: Best the same day. They keep 2 days at room temperature but the graham base softens, and they freeze poorly, so plan to make these last.

15. Salted Caramel Chocolate Cookie Bars

This is the one to bring when you want the tray to look like you spent more time than you did. The layers do the work: cocoa shortbread, chewy caramel, glossy chocolate, flaky salt.

Yield: 16 bars · Prep: 20 min · Bake: 20 to 24 min · Total: about 1 hr 5 min · Difficulty: Medium

Ingredients

For the crust:

• 1 1/4 cups all-purpose flour (156 g)
• 1/3 cup cocoa powder (43 g)
• 1/2 cup granulated sugar (100 g)
• 1/4 teaspoon fine salt
• 10 tablespoons unsalted butter (142 g), cold, cubed

For the caramel:

• 1 cup light brown sugar (200 g), packed
• 6 tablespoons unsalted butter (85 g), cut into pieces
• 1/2 cup heavy cream (120 ml)
• 1 teaspoon vanilla extract
• 1/2 teaspoon fine salt

For the top:

• 1 1/2 cups semisweet chocolate chips (255 g)
• 2 tablespoons butter (28 g)
• Flaky sea salt, for the top

Allergens: Contains milk and wheat.

Instructions

1. Heat the oven to 350°F (175°C). Line a 9×13 inch pan with parchment.
2. Whisk the flour, cocoa, sugar and salt, then cut in the cold butter until the mix clumps.
3. Press into the pan and bake at 350°F (175°C) for 8 to 10 minutes, just until set. Do not wait for it to brown much.
4. While it bakes, make the caramel. Combine the brown sugar, butter and cream in a saucepan over medium heat and stir constantly until it bubbles and thickens, 4 to 6 minutes. Remove from the heat and stir in the vanilla and salt.
5. Spread the hot caramel over the warm crust and return the pan to the oven for 3 to 4 minutes, until the caramel looks set and shiny, not bubbling.
6. Melt the chocolate chips with the 2 tablespoons of butter in 30-second microwave bursts, stirring between each.
7. Pour the chocolate over the caramel, spread to the edges, and sprinkle with flaky salt. Cool 30 minutes, then cut into 16 squares.

Tip: The caramel goes into the oven for only a few minutes. Left too long it goes from chewy to hard candy, and there is no coming back from that.

Swap it: Add 1/3 cup chopped toasted pecans to the caramel layer, or use store-bought caramel sauce and shave 10 minutes off the recipe. A pinch of espresso powder in the crust deepens the chocolate.

Storage: Keeps 5 days at room temperature, covered, and the caramel stays soft. Freezes up to 2 months; let it sit at room temperature for 20 minutes before serving.

Tips for Making These

Most of the problems I have had with bars came down to the pan, the measuring, or cutting them too early. If you are working your way through these 15 easy cookie bar recipes for potlucks over a season, these are the fixes that turned my failures into a repeatable method.

Line the pan, do not just grease it

Always use parchment for bars, with enough overhang to lift them out by the corners. Greased-only crusts stick, and pulling a stuck bar apart is how half of them crumble onto the counter. Lightly butter the parchment too for tall or heavy batters.

Pack brown sugar and weigh sticky things

Packed brown sugar by eye is how bars end up dry. Pack it firmly into the cup, level it with a straight edge, and level melted or sticky butter the same way. A kitchen scale removes the guessing entirely.

Why are my cookie bars raw in the middle?

Three things cause it: a pan that is too small, an oven that runs hot at the edges, and cutting too early. If the middle is underbaked at the time limit, spread the dough thinner in the pan, use a light-colored pan, and give it two more minutes.

The other fix is carryover cooking. A center that looks slightly underdone and matte at the time limit is usually correct, because the middle continues setting in the pan for another 20 minutes. A shiny, wet center is genuinely raw; pull those out sooner.

Cool fully before cutting

Chill the pan in the refrigerator for 20 minutes if you need neat squares, then lift the parchment out and cut with a thin knife wiped between every cut. Warm bars smear and crumble, and they pull up crumbs from the surface with each slice.

Scale the pan, not the clock

A 9×9 inch pan makes bars about twice as thick, so add 4 to 6 minutes. A half-sheet pan makes them about half as thick, so cut 5 minutes. For 20 or more guests, bake two pans on two oven racks rather than doubling in one deeper dish, and rotate them halfway.

Transport bars in layers, not in a stack

Line a sheet pan with parchment, set the bars in a single layer, and put a second sheet of parchment over the top with something flat and heavy resting on it. Keep them cool, not cold, in the car. Glazed bars travel better with the glaze sent in a small lidded container and poured on at the other end.

Frequently Asked Questions

Conclusion

If you are choosing from 15 easy cookie bar recipes for potlucks for the first time, start with number one, the classic chocolate chip cookie bars. It is forgiving, it freezes well, and it is the version people ask me to bring again, which is the only review that matters for a recipe you will be making every October from now on.

After that, pick by flavor and by how much time you have. Bars number 3 and 13 feed a hungry room fastest, number 12 is the one that gets photographed, and number 4 is the answer when you forgot to plan and need something in under an hour. If you want more ways to feed a crowd, the Christmas cookie recipe ideas cover the holiday months, and the cake mix cookie bars get you out the door with almost no prep.