Traybake Brookies Recipe
Prep Time:
2 hours
Cook Time:
50 minutes
Servings:
16 servings
Ingredients
  • 2 cups butter, divided
  • 3 ¼ cups brown sugar, divided
  • ½ cup white sugar
  • 5 eggs, room temperature, divided
  • 1 tablespoon, plus 2 teaspoons vanilla extract, divided
  • 1 ⅔ cups, plus ¾ cup all-purpose flour, divided
  • 1 tablespoon cornstarch
  • 1 teaspoon baking powder
  • 1 ½ teaspoons salt, divided
  • 1 ½ cups semisweet chocolate chips or chunks
  • 1 ¼ cups cocoa powder
  • 1 cup white chocolate chips or chunks
Directions
  1. Line a 9-x9-inch baking pan with baking paper, and set it to the side. In a microwave-proof bowl, melt ¾ cup of butter.
  2. Once it is melted, add it to a large mixing bowl, along with ¾ cup of packed brown sugar, and all the white sugar. Mix everything together.
  3. Whisk 1 egg into the butter and sugar mixture, then add 1 tablespoon of vanilla extract, and mix.
  4. In a separate bowl, combine 1 ⅔ cups of all-purpose flour, the cornstarch, baking powder, and ¾ teaspoon of salt.
  5. Fold the flour mixture into the large mixing bowl with the wet ingredients until a thick cookie dough forms. Mix in semisweet chocolate chips.
  6. Press the cookie dough mixture into the base of the lined baking pan, and refrigerate for at least 1 hour. After a minimum of 1 hour, preheat the oven to 350 F.
  7. In a microwave-proof bowl, melt 1 ¼ cups of butter. Then, mix in the remaining 2 ½ cups of brown sugar, 4 eggs, and 2 teaspoons of vanilla extract.
  8. Fold in the cocoa powder, the remaining ¾ cup of all-purpose flour, and remaining ¾ teaspoon of salt. Finally, fold in the white chocolate chips.
  9. Remove the baking pan with the cookie dough base from the fridge, and add the brownie batter on top, spreading it out evenly to fully cover the cookie base.
  10. Place the brookies into the oven to bake for 45 minutes. When a skewer inserted comes out covered in sticky crumbs, remove the pan from the oven.
  11. Allow it to cool completely, ideally overnight but at least 30 minutes, before slicing it into 16 squares. Store the brookies at room temperature in an airtight container, and consume them within 3 days.