Banana Bread Brownies with Brown Butter Frosting

These banana bread brownies are soft, moist, and packed with rich banana flavor. Topped with silky brown butter frosting, they combine the comforting taste of banana bread with the chewy texture of brownies for an irresistible dessert.

Prep Time

• Prep Time: 15 minutes
• Bake Time: 25 minutes
• Cooling Time: 30 minutes
• Total Time: About 1 hour 10 minutes
• Servings: 16 bars

Equipment

• Mixing bowls
• Hand mixer or whisk
• 9×13-inch baking pan
• Saucepan
• Spatula
• Measuring cups and spoons

Ingredients

Banana Bread Brownies

• 1 ½ cups sugar
• 1 cup sour cream
• ½ cup unsalted butter, softened
• 2 eggs
• 3 ripe bananas, mashed
• 2 teaspoons vanilla extract
• 2 cups all-purpose flour
• 1 teaspoon baking soda
• ¾ teaspoon salt

Brown Butter Frosting

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

Ingredient Notes

• Ripe Bananas: The darker the bananas, the sweeter the flavor.
• Sour Cream: Keeps the brownies extra moist and tender.
• Brown Butter: Gives the frosting a rich caramel-like flavor.
• Vanilla Extract: Enhances the warm bakery taste.

Instructions

Make the Brownies

1. Preheat oven to 375°F (190°C). Grease a 9×13-inch pan.
2. In a large bowl, beat sugar, sour cream, butter, and eggs until smooth.
3. Mix in mashed bananas and vanilla extract.
4. Add flour, baking soda, and salt. Stir until combined.
5. Spread batter evenly into prepared pan.
6. Bake for 22–25 minutes until lightly golden and set.
7. Let cool slightly.

Make the Brown Butter Frosting

1. Melt butter in a saucepan over medium heat.
2. Continue cooking until butter turns golden brown and smells nutty.
3. Remove from heat and whisk in powdered sugar, vanilla, and milk until smooth.

Finish

1. Spread warm frosting over slightly warm brownies.
2. Allow frosting to set before slicing into bars.

Nutrition Facts (Approx. Per Bar)

• Calories: 280
• Carbohydrates: 39g
• Protein: 3g
• Fat: 12g
• Sugar: 28g

Tips and Variations

• Add chopped walnuts or pecans for crunch.
• Sprinkle cinnamon into the batter for extra warmth.
• Drizzle caramel sauce on top before serving.
• Store in an airtight container for up to 4 days.
• Serve slightly warm with vanilla ice cream.