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Brown Butter Brookies – The Ultimate Cookie and Brownie Recipe

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Rich, chewy brookies made with brown butter for extra flavor. A fudgy brownie base topped with golden chocolate chip cookie dough — the best of both desserts in one bite.

Ingredients

Scale

Brownie Layer:

  • ½ cup browned butter

  • 115g dark chocolate (60–70%), chopped

  • ½ cup granulated sugar

  • ½ cup brown sugar

  • 2 large eggs

  • 1 tsp vanilla extract

  • ½ cup cocoa powder

  • ½ cup all-purpose flour

  • ¼ tsp salt

Cookie Layer:

  • ½ cup browned butter

  • ½ cup brown sugar

  • ¼ cup granulated sugar

  • 1 egg + 1 egg yolk

  • 1 tsp vanilla extract

  • 1¼ cup all-purpose flour

  • ½ tsp baking soda

  • ½ tsp salt

  • ¾ cup chocolate chip

Instructions

  • Preheat oven to 175°C (350°F). Line a 9×13-inch pan with parchment paper.

  • Brown the butter, then divide evenly for each batter.

  • For brownie batter: melt chocolate in warm butter. Whisk in sugars, eggs, and vanilla. Stir in cocoa, flour, and salt. Spread into pan.

  • For cookie dough: beat sugars into cooled butter. Add egg, yolk, and vanilla. Mix in flour, baking soda, and salt. Fold in chocolate chips.

  • Drop cookie dough in dollops over brownie batter. Gently spread without mixing the layers.

  • Bake for 28–35 minutes until golden on top and set in the center.

  • Cool completely before slicing.

Notes

  • Add flaky salt on top before baking for contrast.

  • Freeze slices for up to 3 months.

  • Halve the recipe for an 8×8 pan.