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A stack of Brownie Birthday Cake Bars with chocolate layers and rainbow sprinkles
Print Recipe

Brownie Birthday Cake Bars

Prep Time20 minutes
Cook Time35 minutes
Total Time55 minutes
Servings: 16 servings
Calories: 280kcal

Ingredients

  • 1/2 cup unsalted butter, melted (brownie layer)
  • 1 cup granulated sugar (brownie layer)
  • 2 large eggs (brownie layer)
  • 1 teaspoon vanilla extract (brownie layer)
  • 1/2 cup unsweetened cocoa powder (brownie layer)
  • 1/2 cup all -purpose flour (brownie layer)
  • 1/4 teaspoon salt (brownie layer)
  • 1/2 cup unsalted butter, softened (cake layer)
  • 1/2 cup granulated sugar (cake layer)
  • 1/4 cup light brown sugar, packed (cake layer)
  • 1 large egg (cake layer)
  • 1 teaspoon vanilla extract (cake layer)
  • 1/4 teaspoon almond extract (cake layer)
  • 1 cup all -purpose flour (cake layer)
  • 1/2 teaspoon baking powder (cake layer)
  • 1/3 cup rainbow sprinkles

Instructions

  • Preheat oven to 350°F (175°C) and grease an 8x8 inch square baking pan or line with parchment paper.
  • In a medium bowl, whisk together the melted butter and 1 cup sugar for the brownie layer.
  • Add 2 eggs and 1 teaspoon vanilla to the brownie mixture, whisking until smooth.
  • Gently fold in 1/2 cup cocoa powder, 1/2 cup flour, and 1/4 teaspoon salt until just combined.
  • Spread the brownie batter evenly into the bottom of the prepared baking pan.
  • In a separate large bowl, cream together the softened butter, 1/2 cup granulated sugar, and brown sugar until light and fluffy.
  • Beat in the remaining egg, vanilla extract, and almond extract for the cake layer.
  • Stir in 1 cup flour and baking powder until a thick dough forms, then fold in the rainbow sprinkles.
  • Drop spoonfuls of the cake layer batter over the brownie layer and spread gently to cover.
  • Bake for 30 to 35 minutes, or until a toothpick inserted into the center comes out with only a few moist crumbs.
  • Allow the bars to cool completely in the pan before slicing into 16 squares.