Brookies (Brownie Cookies)

Step 1

Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x13-inch baking dish.

Step 2

Prepare cookie layer: Beat butter, brown sugar, white sugar, and vanilla in a large bowl until creamy. Add egg; beat until light and creamy, about 2 minutes.

Step 3

Whisk together flour, salt, and baking soda in a bowl. Gradually stir flour mixture into butter mixture until dough is combined. Stir chocolate chips into dough. Spread dough evenly into the prepared baking dish; set aside.

Step 4

Prepare brownie layer: Stir together sugar, melted butter, and vanilla in a bowl; add eggs and beat well. Mix in cocoa powder until well-combined. Stir in flour, baking powder, and salt until batter is combined. Pour over cookie layer and spread to cover completely.

Step 5

Bake in the preheated oven until a toothpick inserted into the center comes out clean, 20 to 25 minutes. Cool completely before cutting into 20 bars.