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A close-up of a square Banana Bread Brownie with creamy frosting and a sprinkle of cinnamon.

Easy Banana Bread Brownies

These banana bread brownies are a simple and delicious dessert. They combine the moistness of banana bread with the rich texture of brownies, topped with a creamy frosting.
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Prep Time 20 minutes
Cook Time 40 minutes
Cooling Time 1 hour
Total Time 2 hours
Servings: 12 bars
Course: Dessert
Cuisine: American
Calories: 505
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Brownies
  • 1.5 cups sugar
  • 0.5 cup butter, softened
  • 1 cup sour cream
  • 2 large eggs
  • 3-4 ripe bananas, mashed
  • 2 teaspoons vanilla extract
  • 2 cups all-purpose flour
  • 1 teaspoon baking soda
  • 0.75 teaspoon salt
For the Frosting
  • 0.5 cup butter
  • 3 cups powdered sugar
  • 1 teaspoon vanilla extract
  • 0.25 cup milk or half and half
  • cinnamon for sprinkling

Equipment

  • 9x13-inch baking pan
  • Large bowl
  • medium skillet
  • Stand mixer

Method
 

  1. Preheat your oven to 375°F (190°C). Grease or line a 9x13 inch baking pan with parchment paper.
  2. In a large bowl, beat the sugar and butter until combined. Add the sour cream, eggs, mashed bananas, and vanilla extract. Blend until smooth.
  3. Add the flour, baking soda, and salt to the wet ingredients. Mix until just combined.
  4. Pour the batter into the prepared pan. Bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean. Let the brownies cool completely before frosting.
  5. For the frosting, melt the butter in a medium skillet over medium-low heat until foamy and lightly browned. Carefully pour the browned butter into a large bowl or the bowl of a stand mixer.
  6. Add the powdered sugar and vanilla extract to the browned butter. Mix to combine.
  7. With the mixer on low speed, gradually add the milk until a smooth and creamy frosting forms. Beat on high speed for 3-5 minutes until light and fluffy.
  8. Spread the frosting evenly over the cooled brownies. Sprinkle with cinnamon.

Nutrition

Serving: 12gCalories: 505kcalCarbohydrates: 79gProtein: 4gFat: 20gSaturated Fat: 12gTrans Fat: 1gCholesterol: 78mgSodium: 401mgPotassium: 179mgFiber: 1gSugar: 59gVitamin A: 659IUVitamin C: 3mgCalcium: 41mgIron: 1mg

Notes

Store frosted banana brownies covered or in an airtight container at room temperature for up to 5 days. To freeze, wrap frosted bars tightly in plastic wrap and then in foil. Store in the freezer for up to 3 months. Thaw before serving.

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