A rich, fudgy brownie base topped with soft, buttery chocolate chip cookie dough — brookies are the ultimate dessert mash-up baked into one irresistible bar.
Brownie Layer:
½ cup unsalted butter, melted
¾ cup granulated sugar
¼ cup brown sugar
2 large eggs
1 tsp vanilla extract
½ cup unsweetened cocoa powder
⅔ cup all-purpose flour
¼ tsp salt
½ tsp espresso powder (optional)
Cookie Layer:
½ cup unsalted butter, softened
½ cup brown sugar
¼ cup granulated sugar
1 large egg
1 tsp vanilla extract
1¼ cups all-purpose flour
½ tsp baking soda
¼ tsp salt
¾ cup semisweet chocolate chips or chunks
Preheat oven to 350°F. Line a 9×9-inch pan with parchment.
For the brownie layer, whisk melted butter with both sugars and eggs. Stir in vanilla, cocoa, flour, salt, and espresso powder.
Spread brownie batter in the prepared pan.
For the cookie layer, cream softened butter with both sugars. Mix in egg and vanilla. Add flour, baking soda, and salt. Fold in chocolate chips.
Drop cookie dough over brownie layer and gently press.
Bake for 28–32 minutes, until edges are set and center is slightly jiggly.
Cool completely before slicing.
Chill before slicing for cleaner bars. Add sea salt on top before baking for extra flavor.