Ingredients
Equipment
Method
- Preheat oven to 350°F (175°C). Grease and line an 8x8-inch pan with parchment paper.
 - Whisk melted butter and sugar. Add eggs and vanilla. Stir in cocoa powder, flour, salt, and baking powder until smooth. Spread evenly in pan.
 - Cream softened butter with brown and white sugar until fluffy. Add egg and vanilla. Mix in flour, baking soda, and salt. Fold in chocolate chips.
 - Drop spoonfuls of cookie dough over brownie batter and spread gently.
 - Bake 30–35 minutes until cookie layer is golden and brownies are set. Cool completely before slicing.
 
Notes
For cleaner slices, refrigerate before cutting. Customize with nuts, caramel swirls, or white chocolate chips.
