Banana Bars with Butter-Rum Frosting


This is a great recipe to make when you have overripe bananas at your house. Being extra-ripe means that they are sweeter and are easier to mash.

Banana Bars with Butter-Rum Frosting
Photo: Blaine Moats
Prep Time:
20 mins
Bake Time:
25 mins
Total Time:
20 mins
48 bars


  • ½ cup butter, softened

  • 1 ⅓ cup sugar

  • 1 ½ teaspoon baking powder

  • ½ teaspoon baking soda

  • ¼ teaspoon salt

  • 1 egg

  • 1 cup mashed bananas (about 3 medium)

  • ½ cup dairy sour cream

  • 1 teaspoon vanilla

  • 2 cup all-purpose flour

  • ¾ cup chopped toasted almonds

  • 1 recipe Butter-Rum Frosting

  • Freshly grated nutmeg (optional)

Butter-Rum Frosting

  • 3 tablespoon butter, softened

  • 3 cup powdered sugar

  • 1 tablespoon rum

  • 1 teaspoon vanilla

  • Milk


  1. Preheat oven to 350 degrees F. Grease a 15x10x1-inch baking pan; set aside.

  2. In a large mixing bowl beat butter with an electric mixer on medium to high speed for 30 seconds. Add sugar, baking powder, baking soda, and salt. Beat until combined, scraping sides of bowl occasionally. Beat in egg, mashed bananas, sour cream, and vanilla until combined. Beat in as much of the flour as you can with the mixer. Using a wooden spoon, stir in any remaining flour and the almonds.

  3. Pour the batter into the prepared baking pan, spreading evenly. Bake in a 350 degrees F oven about 25 minutes or till a wooden toothpick inserted near the center comes out clean. Cool in pan on a wire rack.

  4. Spread with Butter-Rum Frosting. Cut into bars. If desired, just before serving, sprinkle with freshly grated nutmeg.

Butter-Rum Frosting

  1. In a medium mixing bowl beat butter on medium speed of an electric mixer for 30 seconds. Gradually beat in half of the powdered sugar. Beat in rum and vanilla. Beat in the rest of the powdered sugar and enough milk to make a frosting of spreading consistency.

Nutrition Facts (per serving)

111 Calories
4g Fat
18g Carbs
1g Protein
Nutrition Facts
Calories 111
% Daily Value *
Total Fat 4g 5%
Saturated Fat 2g 10%
Cholesterol 12mg 4%
Sodium 60mg 3%
Total Carbohydrate 18g 7%
Total Sugars 13g
Protein 1g
Calcium 10.1mg 1%
Iron 0.4mg 2%
Potassium 33mg 1%
Folate, total 12.1mcg
Vitamin B-6 0mg

*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Related Articles