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0 from 18 votes

Peanut Butter Banana Cake with Chocolate Frosting

This cake has loads of banana flavor with just a hint of peanut butter. The fudgy chocolate frosting is just perfect on this one.

Prep Time
20 mins
Cook Time
20 mins
Total Time
55 mins
Servings: 12
Calories: 633 kcal
Course: Dessert
Cuisine: American

Ingredients

For the cake
  • 1 cup butter softened
  • 1 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla
  • 1/2 cup buttermilk
  • 3 medium ripe bananas mashed
  • 1/3 cup creamy peanut butter
  • 2 cups all-purpose flour
  • 1 1/2 teaspoons baking soda
  • 1/2 teaspoon cinnamon
  • 1/4 teaspoon salt
For the frosting
  • 1 cup granulated sugar
  • 6 tablespoons milk
  • 6 tablespoons butter
  • 1 cup semi-sweet chocolate chips
  • 1 cup chopped walnuts

Instructions

For the cake
    Cup of Yum
  1. Preheat oven to 350 degrees. Spray a 9x13 baking dish with non-stick spray.
  2. In a large bowl beat together the sugar and butter with an electric mixer until light and fluffy. Beat in eggs, vanilla, and peanut butter.
  3. In a separate bowl, combine the flour, baking soda, cinnamon, and salt.
  4. Add 1/3 of the flour mixture to the butter mixture and mix until combined. Add 1/3 of the buttermilk and mix until combined. Repeat with the remaining flour and buttermilk. Stir in bananas.
  5. Pour batter into the prepared pan and bake for 30-35 minutes or until a tester comes out clean.
  6. Cool completely before frosting.
For the frosting
  1. Add sugar, butter, and milk to a small saucepan over medium heat and bring to a boil.
  2. Boil for exactly 1 minute and then remove from the heat.
  3. Immediately stir the chocolate chips into the hot mixture until the frosting is smooth.
  4. Pour the chocolate frosting over the cake and sprinkle with the walnuts.
  5. Let cool for 20 minutes or until the frosting has firmed up.

Nutrition Information

Serving 1slice Calories 633kcal (32%) Carbohydrates 68g (23%) Protein 8g (16%) Fat 39g (60%) Saturated Fat 19g (95%) Cholesterol 89mg (30%) Sodium 431mg (18%) Potassium 336mg (10%) Fiber 4g (16%) Sugar 44g (88%) Vitamin A 753IU (15%) Vitamin C 3mg (3%) Calcium 54mg (5%) Iron 3mg (17%)

Nutrition Facts

Serving: 12Serving

Amount Per Serving

Calories 633

% Daily Value*

Serving 1slice
Calories 633kcal 32%
Carbohydrates 68g 23%
Protein 8g 16%
Fat 39g 60%
Saturated Fat 19g 95%
Cholesterol 89mg 30%
Sodium 431mg 18%
Potassium 336mg 7%
Fiber 4g 16%
Sugar 44g 88%
Vitamin A 753IU 15%
Vitamin C 3mg 3%
Calcium 54mg 5%
Iron 3mg 17%

* Percent Daily Values are based on a 2,000 calorie diet.