Banana Bread Brownies Recipe

Decadent Banana Bread Brownies with a rich brown butter frosting! This irresistible recipe combines the moistness of banana bread with the fudgy texture of brownies, topped with a sophisticated brown butter frosting. A guaranteed crowd-pleaser, perfect for dessert or a special occasion.

Prep Time 20 mins
Cook Time 40 mins
Calories 436 kcal
Protein 6g
Rating Be the first
Banana Bread Brownies 257

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Forktionary editorial kitchen team

The Forktionary Kitchen Team

Adapted from Food.com, then tested & standardized by Forktionary.

Ingredients for Banana Bread Brownies

  • 1 1/2 cups granulated sugar
  • 1/2 cup sour cream
  • 1/2 cup unsalted butter, softened (for brownies) and 1/4 cup unsalted butter (for frosting)
  • 2 large eggs
  • 1 cup mashed ripe bananas (about 2 medium)
  • 1 teaspoon vanilla extract (for brownies) and 1/2 teaspoon vanilla extract (for frosting)
  • 1 1/2 cups all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup chopped walnuts (optional)
  • 2 cups powdered sugar
  • 1-2 tablespoons milk

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How to Make Banana Bread Brownies

  1. Preheat oven to 375°F (190°C). Grease and flour a 15x10-inch jelly roll pan.
  2. In a large bowl, cream together the sugar, sour cream, softened butter, and eggs until light and fluffy.
  3. Beat in the mashed bananas and vanilla extract until well combined.
  4. In a separate bowl, whisk together the flour, baking soda, and salt.
  5. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix.
  6. Stir in the chopped walnuts (if using).
  7. Spread the batter evenly into the prepared pan.
  8. Bake for 20-25 minutes, or until a wooden skewer inserted into the center comes out with moist crumbs.
  9. While the brownies are baking, prepare the frosting: In a medium saucepan, melt the ¼ cup butter over medium heat.
  10. Continue cooking, swirling the pan occasionally, until the butter turns a light brown color and has a nutty aroma (be careful not to burn it!).
  11. Immediately remove from heat and let cool slightly.
  12. In a separate bowl, whisk together the powdered sugar and vanilla extract.
  13. Gradually add the browned butter to the powdered sugar mixture, whisking until smooth.
  14. Add milk, 1 tablespoon at a time, until you reach your desired frosting consistency.
  15. Once the brownies have cooled slightly, spread the brown butter frosting evenly over the top.
  16. Let the frosting set before cutting and serving. Enjoy!

Nutrition Information (Approximate per serving)

Sodium

13 g

Sugar

219g

Fat

49g

Carbs

23g

Recipe Tags (Choose a tag and find related recipes!)

60 Minutes Or Less Time To Make Course Main Ingredient Preparation For Large Groups Low Protein Desserts Snacks Fruit Dietary Low In Something Number Of Servings From Scratch

Frequently Asked Questions

How long does it take to make Banana Bread Brownies?

Banana Bread Brownies takes about 60 minutes from start to finish — roughly 20 minutes to prepare and 40 minutes to cook.

How many calories are in Banana Bread Brownies?

Banana Bread Brownies has approximately 436 calories per serving, with about 6 g protein, 23 g carbohydrates and 25 g fat.

What ingredients do I need for Banana Bread Brownies?

The key ingredients for Banana Bread Brownies are Sugar, Sour Cream, Butter, Eggs, Bananas, Vanilla Extract. See the full list with measurements above.

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