Go Back
–+ servings
Banana Bread Brownies

Moist Banana Bread Brownies with Dreamy Brown Butter Frosting

These Banana Bread Brownies combine the comforting texture of banana bread with fudgy brownie richness, topped with dreamy brown butter frosting.
Print Recipe Pin Recipe
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Servings: 12 brownies
Course: Desserts
Cuisine: American
Calories: 280
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Brownies
  • 1 cup Sugar Can substitute with brown sugar for a deeper flavor.
  • 1 cup Sour Cream Greek yogurt can be used as an alternative.
  • 1/2 cup Butter Use unsalted butter to control salt content.
  • 2 large Eggs Ensure they are at room temperature for better mixing.
  • 3-4 large Ripe Bananas Use overripe bananas for best results.
  • 1 teaspoon Vanilla Extract Use pure vanilla extract for the best taste.
  • 1 cup All-Purpose Flour Can substitute with gluten-free blend if needed.
  • 1 teaspoon Baking Soda Ensure it is fresh for best results.
  • 1/2 teaspoon Salt Use kosher or sea salt.
  • 1/2 cup Chopped Walnuts (optional) Can be replaced with chocolate chips or omitted.
For the Frosting
  • 2 cups Powdered Sugar Sift before measuring for best results.
  • 2 tablespoons Milk Substitutes include almond milk or water for a dairy-free option.
  • 1/2 cup Butter (for frosting) Use unsalted for better control over saltiness.

Equipment

  • 15x10-inch jelly roll pan
  • large mixing bowl
  • Saucepan

Method
 

Step-by-Step Instructions for Brownies
  1. Grease and flour a 15x10-inch jelly roll pan thoroughly and preheat your oven to 375°F (190°C).
  2. In a large mixing bowl, combine the sugar, sour cream, unsalted butter, and eggs. Beat together until smooth and creamy.
  3. Gently stir in the mashed ripe bananas and pure vanilla extract into the creamy mixture.
  4. Sift together the all-purpose flour, baking soda, and salt. Fold this dry mixture into the banana batter.
  5. If using chopped walnuts, gently fold them into the brownie batter now.
  6. Pour the batter evenly into your prepared jelly roll pan and bake for 20-25 minutes.
  7. In a saucepan over medium heat, melt the unsalted butter until golden brown. Whisk in powdered sugar, vanilla extract, and milk.
  8. Once the brownies have cooled slightly, spread the warm brown butter frosting over the top.

Nutrition

Serving: 1brownieCalories: 280kcalCarbohydrates: 40gProtein: 3gFat: 12gSaturated Fat: 7gPolyunsaturated Fat: 2gMonounsaturated Fat: 4gCholesterol: 35mgSodium: 150mgPotassium: 200mgFiber: 1gSugar: 25gVitamin A: 300IUVitamin C: 2mgCalcium: 20mgIron: 1mg

Notes

Ensure bananas are very ripe for best flavor and moisture. Avoid overbaking for tender brownies.

Tried this recipe?

Let us know how it was!