Fudgy Brookies Recipe with Brown Butter Cookie Dough
This ultimate brookies recipe features a fudgy dark chocolate brownie base topped with chewy brown butter chocolate chip cookies for the best of both worlds.
If you have ever stood in front of a cooling rack unable to choose between a chewy cookie and a dense brownie, this brookies recipe is your new best friend. We aren't just swirling two batters together; we are layering a sophisticated, cocoa-heavy brownie base under dollops of nutty brown-butter chocolate chip cookie dough to create a bar with two distinct, perfect textures.
Making easy brookies from scratch is far superior to using boxed mixes because you can control the salt and the quality of the chocolate. These brownie cookie bars bake up with a signature shiny, crackled top and a center that stays gooey for days. It is a decadent, crowd-pleasing dessert that feels like a bakery-level feat but requires only basic pantry staples and a little bit of patience while the butter browns.
Ingredients
Brown Butter Cookie Layer
- 1/2 cup (113g) unsalted butter
- 1/2 cup (100g) packed brown sugar
- 1/4 cup (50g) granulated sugar
- 1 large egg, room temperature
- 1 tsp vanilla extract
- 1 1/4 cups (155g) all-purpose flour
- 1/2 tsp baking soda
- 1/2 tsp kosher salt
- 3/4 cup (130g) semi-sweet chocolate chips
Dark Chocolate Brownie Layer
- 1/2 cup (113g) unsalted butter, melted
- 1 cup (200g) granulated sugar
- 2 large eggs
- 1 tsp vanilla extract
- 1/2 cup (45g) unsweetened Dutch-process cocoa powder
- 1/2 cup (65g) all-purpose flour
- 1/4 tsp salt
Instructions
- 1
Preheat your oven to 350°F (175°C) and line an 8x8-inch baking pan with parchment paper, leaving an overhang on two sides.
- 2
Make the brown butter for the cookie layer by melting 1/2 cup butter in a small saucepan over medium heat, swirling until the milk solids turn golden brown and smell nutty; pour into a bowl and let cool for 10 minutes.
- 3
Whisk the brown sugar and granulated sugar into the cooled brown butter, then add the egg and vanilla, beating until smooth.
- 4
Fold in the flour, baking soda, and salt for the cookie dough, then stir in the chocolate chips; set this dough aside.
- 5
Prepare the brownie layer by whisking the melted butter and sugar in a medium bowl for at least one minute to ensure a crackly top.
- 6
Add the eggs and vanilla to the brownie mixture, whisking vigorously until the batter looks glossy.
- 7
Sift in the cocoa powder, flour, and salt, folding gently with a spatula just until no streaks of flour remain.
- 8
Pour the brownie batter into the prepared pan and spread it into an even layer.
- 9
Scoop tablespoons of the cookie dough and drop them randomly over the brownie batter, then use a knife to gently swirl the two just once or twice.
- 10
Bake for 30–35 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs—do not overbake.
- 11
Allow the bars to cool completely in the pan for at least 2 hours before lifting the parchment to slice; this ensures the fudgy layers set properly.
Nutrition (per serving)
Estimates only — not medical or dietary advice.
- Calories
- 285 kcal
- Protein
- 3 g
- Carbs
- 36 g
- Fat
- 15 g
- Fiber
- 1.5 g
- Sugar
- 25 g
- Sodium
- 165 mg
Tips
- → Don't skip browning the butter for the cookie layer; it adds a toasted, toffee-like depth that balances the intense chocolate of the brownie.
- → To get that elusive shiny, papery brownie top, make sure you whisk the sugar and eggs very well to dissolve the sugar before adding the dry ingredients.
- → Use Dutch-process cocoa powder for the brownie base to achieve a dark, Oreo-like color and a smoother chocolate flavor.
- → If you prefer a saltier finish, sprinkle a pinch of flaky sea salt over the top immediately after taking the pan out of the oven.
FAQ
How do I store brookies to keep them fudgy?
Store them in an airtight container at room temperature for up to 4 days. For longer storage, wrap individual squares in plastic wrap and freeze for up to 3 months.
Can I use a 9x13 pan for this brookies recipe?
Yes, but you must double the recipe. If you don't double it, the layers will be too thin and will likely overbake and become crunchy rather than fudgy.
Why is my cookie layer sinking into the brownie?
A little sinking is normal and creates the 'swirl' effect, but if it disappears completely, your brownie batter might be too thin. Ensure you are measuring your flour by weight or using the spoon-and-level method.
Can I use chocolate chunks instead of chips?
Absolutely. Chopping a high-quality chocolate bar into chunks will give you pools of melted chocolate, which many prefer over the uniform shape of chips.
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