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Brookie Bars Recipe – Chewy Brown Butter Cookie + Fudgy Brownie

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A rich, chewy combo of fudgy brownies and nutty brown butter chocolate chip cookie dough baked into one decadent treat.

Ingredients

Scale

For Cookie Layer:

  • ¾ cup unsalted butter, browned

  • ½ cup brown sugar

  • ¼ cup granulated sugar

  • 1 egg + 1 egg yolk

  • 1½ tsp vanilla extract

  • 1¼ cups all-purpose flour

  • ½ tsp baking soda

  • ½ tsp salt

  • ¾ cup chocolate chips

For Brownie Layer:

  • ½ cup melted butter

  • 1 cup granulated sugar

  • 2 eggs

  • 1 tsp vanilla extract

  • ⅓ cup cocoa powder

  • ½ cup all-purpose flour

  • ¼ tsp salt

Instructions

  • Brown the butter for the cookie layer and let cool. Mix with sugars, eggs, and vanilla.

  • Stir in flour, baking soda, salt, and chocolate chips. Set aside.

  • For brownie layer: whisk melted butter, sugar, eggs, and vanilla. Stir in cocoa, flour, and salt.

  • Preheat oven to 350°F. Line a 9×9 pan.

  • Press cookie dough into the pan. Spread brownie batter on top.

  • Bake 28–35 minutes. Cool completely before cutting.

Notes

Add walnuts for crunch. Chill dough for cleaner layers. Store at room temp or freeze in slices.