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–+ servings

Easy Frosted Banana Bars

Abigail
These delicious frosted banana bars are a delightful twist on banana bread. Easy to make, they feature ripe bananas encased in a moist and tender cake with a creamy buttercream frosting. The recipe makes a big batch and is perfect for any celebration.
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Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Course Dessert
Cuisine American
Servings 20 slices
Calories 330 kcal

Ingredients
 

Banana Bars Ingredients:

  • 3 large ripe bananas
  • ½ cup butter, softened
  • 1 ½ cups sugar
  • 3 eggs
  • 1 cup Sour Cream
  • 1 tsp. Vanilla extract
  • 2 cups flour
  • 1 tsp. Baking soda

Buttercream Ingredients:

  • ½ cup butter, room temp
  • 4-5 cups confectioners sugar, adjust amount to desired taste and consistency
  • 5 tbsp milk
  • 1 tsp. Vanilla extract
  • Chopped walnuts for topping, optional

Instructions
 

For The Banana Bars:

  • Preheat oven to 350 degrees F. Grease a 15-in. X 10-in. X 1-in. baking pan. Set aside.
  • Whisk flour and baking soda together in a small bowl. Set aside.
  • Add softened butter to the bowl of an electric and beat until creamy. Pour sugar into the mixing bowl and mix until well combined.
  • Add eggs, sour cream and vanilla extract to the mixing bowl and beat until smooth.
  • Mash bananas with a fork and add to the mixing bowl. Beat until all ingredients are well combined.
  • Pour dry ingredients into the mixing bowl and continue mixing just until all ingredients are well incorporated and the batter is smooth.
  • Pour batter into the prepared baking pan and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean. Let cool completely.

For The Buttercream:

  • Add butter to the bowl of an electric mixer and beat until creamy. Add confectioners sugar, milk, and vanilla and beat until buttercream is smooth and fluffy.
  • Frost the cooled bars and top with walnuts (optional). Cut into squares, and store any leftovers in an airtight container.

Notes

Tips for the Best Frosted Banana Bars

Use overripe bananas: The riper the bananas, the sweeter and more flavorful your bars will be.

Don't overmix the batter: Mix just until the ingredients are combined to avoid tough bars.
Check for doneness: Insert a toothpick into the center of the bars – it should come out clean when they're ready.
Cool completely before frosting: This prevents the buttercream from melting and ensures a smooth, even layer.
Adjust frosting consistency: Add more milk for a thinner frosting or more sugar for a thicker consistency.
Do you prefer to use cream cheese frosting instead of buttercream? No problem, get our recipe for the ultimate cream cheese frosting here. It's tried and tested and you'll love it!

Nutrition

Calories: 330kcalCarbohydrates: 53gProtein: 3gFat: 12gSaturated Fat: 7gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gTrans Fat: 0.4gCholesterol: 56mgSodium: 156mgPotassium: 110mgFiber: 1gSugar: 41gVitamin A: 408IUVitamin C: 2mgCalcium: 26mgIron: 1mg
Tried this recipe?Let us know how it was!