Brookies Cookies with a Browned Butter Blondie layer combine chewy, nutty blondies with fudgy chocolate brownies for a decadent dessert.
1/2 cup unsalted butter
1/2 cup light brown sugar, packed
1/4 cup granulated sugar
1 large egg
1 teaspoon vanilla extract
1 cup all-purpose flour
1/4 teaspoon salt
1/2 teaspoon baking powder
1/2 cup chocolate chips or chopped nuts (optional)
1/2 cup unsalted butter, melted
1/2 cup granulated sugar
1/4 cup packed brown sugar
2 large eggs
1 teaspoon vanilla extract
1/4 cup unsweetened cocoa powder
1/2 cup all-purpose flour
1/4 teaspoon salt
1/2 cup semi-sweet chocolate chunks or chips
Preheat oven to 350°F (175°C) and line an 8×8-inch pan with parchment paper.
Brown butter for blondie layer until nutty; mix with sugars, egg, and vanilla. Fold in flour, salt, baking powder, and optional chips/nuts.
Prepare brownie layer by combining melted butter, sugars, eggs, vanilla, cocoa, flour, salt, and chocolate chunks.
Spread brownie batter in pan, drop blondie dough over top, gently press to form layer.
Bake 30–35 minutes until blondie is golden and set, brownie fudgy.
Cool completely before cutting into squares.
Optional swirls of peanut butter, caramel, or sea salt topping enhance flavor. Vegan and gluten-free adaptations possible.