Banana Bread Brownies Brown Butter (Printable Version)

Moist banana-infused brownie bars topped with nutty brown butter frosting for the ultimate dessert experience.

# What You Need:

→ Banana Bread Brownies

01 - 1 cup (225 g) unsalted butter, melted
02 - 2 cups (400 g) granulated sugar
03 - 4 large eggs
04 - 1 ½ cups (360 g) mashed ripe bananas, approximately 3-4 bananas
05 - 2 teaspoons vanilla extract
06 - 2 cups (250 g) all-purpose flour
07 - 1 teaspoon baking powder
08 - ½ teaspoon salt

→ Brown Butter Frosting

09 - ½ cup (115 g) unsalted butter
10 - 2 cups (240 g) powdered sugar, sifted
11 - 2-3 tablespoons milk
12 - 1 teaspoon vanilla extract
13 - Pinch of salt

# Directions:

01 - Preheat oven to 350°F. Line a 9x13-inch baking pan with parchment paper and lightly grease.
02 - In a large bowl, whisk melted butter and sugar until smooth and well combined.
03 - Beat in eggs one at a time, ensuring each is fully incorporated. Stir in mashed bananas and vanilla extract.
04 - In a separate bowl, mix flour, baking powder, and salt. Fold dry ingredients into wet mixture until just combined—avoid overmixing.
05 - Spread batter evenly into prepared pan. Bake for 27-32 minutes until toothpick inserted in center comes out clean. Cool completely in pan.
06 - Cook butter in saucepan over medium heat until golden brown and nutty, about 4-5 minutes. Remove from heat and cool slightly for 5 minutes.
07 - Combine browned butter, powdered sugar, 2 tablespoons milk, vanilla extract, and salt. Beat until smooth and spreadable, adding up to 1 more tablespoon milk if needed.
08 - Spread frosting evenly over cooled brownies. Cut into squares and serve.

# Expert Tips:

01 -
  • These bars walk the perfect line between cakey and fudgy, thanks to all those mashed bananas keeping things incredibly moist
  • The brown butter frosting adds this nutty, caramel depth that makes people ask what your secret ingredient is
  • They come together in under an hour but taste like you spent all day babysitting them in the oven
02 -
  • Overripe bananas are not optional here—underripe bananas will give you a bland, almost vegetal taste
  • The brown butter can go from perfect to burnt in seconds, so stay right by the stove and trust your nose more than your eyes
  • Room temperature ingredients prevent the melted butter from seizing when you add the eggs
03 -
  • For even more banana flavor, brush the warm baked bars with a simple syrup made from mashed banana and water before frosting
  • If your frosting is too stiff, add milk one teaspoon at a time rather than tablespoons—it's easier to add than subtract