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Banana Bread Brownies

Banana Bread Brownies are soft banana dessert bars topped with rich brown butter frosting.
Made with ripe bananas and simple pantry ingredients.
Perfect for parties, snacks, or easy homemade desserts.
Prep Time 15 minutes
Course Dessert
Cuisine American

Ingredients
  

For the Banana Bread Brownies

  • 1 ½ cups sugar
  • 1 cup sour cream
  • ½ cup butter softened
  • 2 large eggs
  • 3 –4 ripe bananas mashed
  • 2 teaspoons vanilla extract
  • 2 cups all-purpose flour
  • 1 teaspoon baking soda
  • ¾ teaspoon salt
  • ½ cup chopped walnuts optional

For the Brown Butter Frosting

  • ½ cup butter
  • 4 cups powdered sugar
  • 1 ½ teaspoons vanilla extract
  • 3 tablespoons milk

Instructions
 

  • Preheat oven to 375°F (190°C). Grease and flour a 9x13-inch baking pan.
  • In a large mixing bowl, beat together sugar, sour cream, softened butter, and eggs until smooth and creamy.
  • Add mashed bananas and vanilla extract. Mix until fully combined.
  • Stir in flour, baking soda, and salt. Mix just until combined.
  • Fold in chopped walnuts if using.
  • Spread the Banana Bread Brownies batter evenly into the prepared pan.
  • Bake for 20–25 minutes or until the top is golden brown and a toothpick inserted in the center comes out clean.

Brown Butter Frosting Instructions

  • In a saucepan over medium heat, melt the butter.
  • Continue cooking until the butter bubbles and turns golden brown with a nutty aroma. Stir constantly to prevent burning.
  • Remove from heat immediately.
  • Whisk in powdered sugar, vanilla extract, and milk until smooth.
  • Spread the frosting over the warm brownies using a spatula.
  • Let the frosting cool and set before slicing and serving.

Notes

  • Swap walnuts with pecans or leave nuts out completely
  • Add cinnamon for a warm spice flavor
  • Serve with coffee, tea, or vanilla ice cream
  • Store leftovers in an airtight container for maximum freshness