These chocolate chip cookie brownies stack a fudgy cocoa brownie layer under a soft chocolate chip cookie dough layer, so every bite gives you both desserts at once. They bake in one pan and are ready in about 1 hour 40 minutes, including the cooling time.
You make two quick batters in separate bowls, spoon the cookie dough over the brownie base, and gently press them together. The result is a marbled top with golden cookie pockets and a dense, fudgy middle.
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Why This Chocolate Chip Cookie Brownies Recipe Works
Melted butter in the brownie layer makes it dense and shiny, while creamed butter in the cookie layer keeps that half soft and tender. Two textures in one pan make these more interesting than a plain brownie.
Pressing the dough into the batter instead of stirring keeps the layers distinct. You get clear marbling rather than a muddy mix.
A 9×9 pan keeps the bars thick and fudgy, and baking at 350 degrees F lets the cookie layer cook through before the brownie dries out.
Ingredients for Chocolate Chip Cookie Brownies
- 1/2 cup unsalted butter, melted (brownie layer)
- 1 cup granulated sugar (brownie layer)
- 2 large eggs (brownie layer)
- 1 tsp vanilla extract (brownie layer)
- 1/3 cup unsweetened cocoa powder, sifted
- 1/2 cup all-purpose flour (brownie layer)
- 1/4 tsp salt (brownie layer)
- 1/2 cup unsalted butter, softened (cookie layer)
- 1/2 cup granulated sugar (cookie layer)
- 1/2 cup packed brown sugar
- 1 large egg (cookie layer)
- 1 tsp vanilla extract (cookie layer)
- 1 1/4 cups all-purpose flour (cookie layer)
- 1/2 tsp baking soda
- 1/2 tsp salt (cookie layer)
- 1 cup semi-sweet chocolate chips
Brownie layer: Melted butter, sugar, eggs, cocoa, flour, and a pinch of salt make a quick fudgy batter with no mixer needed.
Cookie dough layer: Softened butter, both sugars, an egg, flour, baking soda, and chips make a soft dough that bakes through in the pan.
Cocoa powder: Sift it so the batter stays smooth and free of lumps.
Chocolate chips: Semi-sweet chips balance the sweet dough and the dark brownie base.
How to Make Chocolate Chip Cookie Brownies
1. Prep the pan. Heat the oven to 350 degrees F and line a 9×9 baking pan with parchment paper, leaving an overhang for lifting.
2. Mix the brownie batter. Melt the butter, then whisk in the sugar, eggs, and vanilla until smooth. Sift in the cocoa, flour, and salt and stir until no lumps remain.
3. Fill the pan. Spread the batter in an even layer across the bottom of the pan.
4. Make the cookie dough. Cream the softened butter with both sugars until fluffy, then beat in the egg and vanilla. Stir in the flour, baking soda, and salt, then fold in the chocolate chips.
5. Top with dough. Drop spoonfuls of cookie dough over the brownie batter and press them in lightly, so they sink in a little and form a marbled top.
6. Bake. Bake for 30 to 35 minutes, until the edges are set and the center looks just barely soft.
7. Cool and cut. Let the pan cool for at least 45 minutes, then lift out the slab and cut it into 12 bars.
How to Serve Chocolate Chip Cookie Brownies
Serve the bars at room temperature with cold milk, or warm them for 10 seconds and top with vanilla ice cream. They also pair well on a dessert table with gooey brownie pie, coconut chocolate chip cookies, creamy cheesecake, and rolled sugar cookies.
How to Store and Reheat Chocolate Chip Cookie Brownies
Store the bars in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to 1 week. To freeze, wrap the bars individually and keep them frozen for up to 2 months, then thaw at room temperature. Warm a bar for 10 seconds in the microwave to bring back the gooey center.
Tips and Variations for Chocolate Chip Cookie Brownies
Line the pan. Parchment lets you lift the whole slab out for clean cuts.
Do not overbake. The edges should look set while the middle stays slightly soft. The bars firm up as they cool.
Chill before cutting. For neat squares, refrigerate the cooled slab for 30 minutes before slicing with a sharp knife.
Add a swirl. Run a butter knife through the layers once or twice for more marbling, but stop before the batters blend.
Try other mix-ins. Swap half of the chips for chopped walnuts or peanut butter chips.
Use room temperature eggs. They blend into the batter more evenly and help the layers bake alike.
Bake the dough through. The cookie layer contains egg and flour, so bake it fully rather than tasting the raw dough.
Store food safely. For general advice on storing prepared foods, see this University of Minnesota Extension guide to storing leftovers.
Frequently Asked Questions About Chocolate Chip Cookie Brownies
How do I know when chocolate chip cookie brownies are done?
The edges should look set and pull slightly from the pan, and the center should look barely soft. A toothpick near the center should come out with a few moist crumbs.
Can I make chocolate chip cookie brownies in a 9×13 pan?
You can, but the layers will be thinner. Bake 25 to 30 minutes and start checking early.
Can I freeze chocolate chip cookie brownies?
Yes. Wrap each bar tightly and freeze for up to 2 months, then thaw at room temperature.
Why are my bars gooey in the middle?
They may need a few more minutes, or they may not have cooled long enough. Cool for at least 45 minutes before cutting.
Can I use boxed brownie mix?
Yes, but this homemade batter takes just a few minutes and gives a fudgier layer with less sweetness.
Chocolate Chip Cookie Brownies
Equipment
- 9×9 baking pan
- Parchment paper
- Two mixing bowls
- Whisk
- Hand mixer
- Fine mesh sifter
Ingredients
Main Ingredients
- ½ cup unsalted butter melted, brownie layer
- 1 cup granulated sugar brownie layer
- 2 large eggs brownie layer
- 1 tsp vanilla extract brownie layer
- ⅓ cup unsweetened cocoa powder sifted
- ½ cup all-purpose flour brownie layer
- ¼ tsp salt brownie layer
- ½ cup unsalted butter softened, cookie layer
- ½ cup granulated sugar cookie layer
- ½ cup brown sugar packed
- 1 large egg cookie layer
- 1 tsp vanilla extract cookie layer
- 1 ¼ cup all-purpose flour cookie layer
- ½ tsp baking soda
- ½ tsp salt cookie layer
- 1 cup semi-sweet chocolate chips
Instructions
Cooking
- Line. Heat the oven to 350 degrees F and line a 9×9 pan with parchment.
- Brownie batter. Whisk melted butter, sugar, eggs, and vanilla, then stir in sifted cocoa, flour, and salt.
- Spread. Pour the batter into the pan and smooth it level.
- Cookie dough. Cream the softened butter and sugars, beat in the egg and vanilla, then mix in flour, baking soda, and salt. Fold in the chips.
- Dollop. Drop the dough over the batter and press it in lightly for a marbled top.
- Bake. Bake 30 to 35 minutes, until the edges are set and the center is barely soft.
- Cool. Cool at least 45 minutes, lift out with the parchment, and cut into 12 bars.
