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Piece of banana brownie on paper.
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5 from 1 vote

Banana Brownies

These delicious banana brownies are similar to blondies with a hint of banana flavor. Topped with an easy vanilla frosting.
Prep Time10 mins
Cook Time25 mins
Total Time40 mins
Course: Dessert
Cuisine: American
Keyword: brownies
Servings: 9
Calories: 478kcal
Author: Heather


  • 1/2 cup unsalted butter, melted
  • 1 cup light brown sugar
  • 1 egg
  • 2 teaspoons vanilla extract
  • 1/4 teaspoon salt
  • 1 cup all-purpose flour
  • 1 large ripe banana, mashed


  • 4 tablespoons unsalted butter, melted
  • 1/4 cup heavy cream
  • 1 teaspoon vanilla
  • 2 1/2 cups powdered sugar


  • Preheat oven to 350 degrees F. Line an 8 x 8 baking dish with either foil or parchment paper. Spray with non-stick cooking spray.
  • Mix together butter and brown sugar. Mix in egg and vanilla extract. Mix in mashed banana.
  • Stir in flour, salt, and mix until well combined.
  • Spread the batter in prepared pan. Bake for 25 minutes or until toothpick comes out clean. Let cool before removing from baking dish.


  • Beat butter and cream with electric mixer until smooth. Mix in vanilla and powdered sugar and beat until frosting forms.
  • Spread the frosting over cooled banana brownies.



**If the frosting is too thin, add extra powdered sugar. If too thick add a splash of cream.


Calories: 478kcal | Carbohydrates: 72g | Protein: 3g | Fat: 21g | Saturated Fat: 13g | Cholesterol: 77mg | Sodium: 87mg | Potassium: 118mg | Fiber: 1g | Sugar: 58g | Vitamin A: 701IU | Vitamin C: 1mg | Calcium: 38mg | Iron: 1mg