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Moist Banana Bread Brownies with Brown Butter Frosting

Close-up of a rich, dark banana bread brownie square topped with thick, creamy frosting.
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A recipe for fudgy brownies infused with the flavor and moisture of banana bread, topped with a rich brown butter frosting.

Ingredients

Scale
  • 1 cup (2 sticks) unsalted butter, plus 4 tablespoons for frosting
  • 1 3/4 cups granulated sugar
  • 3/4 cup packed light brown sugar
  • 4 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup mashed ripe bananas (about 2 medium bananas)
  • 1 cup all-purpose flour
  • 1/2 cup unsweetened cocoa powder
  • 1/2 teaspoon salt
  • 1/2 teaspoon baking powder
  • 1/2 cup semi-sweet chocolate chips
  • 1 cup powdered sugar, for frosting
  • 2 tablespoons milk or cream, for frosting

Instructions

  1. Preheat your oven to 350°F (175°C). Grease and line a 9×13 inch baking pan with parchment paper, leaving an overhang on the sides.
  2. In a large saucepan, melt 1 cup of butter over medium heat. Continue cooking, stirring occasionally, until the butter foams, then browns, and nutty solids form at the bottom. Remove from heat immediately and let cool slightly.
  3. In a large bowl, whisk together the cooled brown butter, granulated sugar, and brown sugar until combined.
  4. Beat in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract and mashed bananas.
  5. In a separate bowl, whisk together the flour, cocoa powder, salt, and baking powder.
  6. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Do not overmix. Fold in the chocolate chips.
  7. Spread the batter evenly into the prepared pan. Bake for 30 to 35 minutes, or until a toothpick inserted near the center comes out with moist crumbs attached. Do not overbake.
  8. Let the brownies cool completely in the pan on a wire rack.
  9. Prepare the frosting: Melt the remaining 4 tablespoons of butter in a small saucepan until browned, similar to step 2. Let cool slightly.
  10. In a medium bowl, whisk the powdered sugar into the cooled brown butter until smooth. Add milk or cream one teaspoon at a time until you reach a spreadable consistency.
  11. Once the brownies are completely cool, spread the brown butter frosting evenly over the top. Cut into bars.

Notes

  • For a swirl effect, reserve 1/2 cup of the batter and gently swirl 1/4 cup of cream cheese mixed with 1 tablespoon of sugar into the main batter before baking.
  • Use very ripe bananas for the best flavor and moisture in your bars.
  • If you prefer a simpler topping, you can substitute the brown butter frosting with a standard cream cheese frosting.

Nutrition

Find it online: https://cookerycourier.com/banana-bread-brownies-recipe/