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5.0 from 126 votes

Banana Cake with Vanilla Frosting

Put those overripe bananas on your counter to good use with this delicious Banana Cake! It's topped with creamy vanilla frosting and makes a perfect treat!

Prep Time
15 mins
Cook Time
15 mins
Total Time
40 mins
Servings: 12
Calories: 206 kcal
Course: Dessert
Cuisine: American

Ingredients

To make the cake:
  • 2/3 cup white granulated sugar
  • 1/2 cup sour cream
  • 1 egg
  • 2 Tablespoons butter, softened
  • 2 medium bananas, mashed
  • 1 teaspoon vanilla extract
  • 1 cup all purpose flour
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
To make the frosting:
  • 2 Tablespoons butter, softened
  • 1 1/4 cups powdered sugar
  • 2-3 Tablespoons milk
  • 1/2 teaspoon vanilla extract

Instructions

    Cup of Yum
  1. Preheat oven to 350 degrees. Spray an 8x8 baking pan with cooking spray and set aside.
  2. Using an electric mixer, beat together the sugar, sour cream, egg, and softened butter over medium speed until combined. Add in the mashed bananas and vanilla extract. 
  3. Stir in the flour, baking soda, and salt by hand, mixing until just combined. Pour into the prepared baking dish and bake in the preheated oven for 22-28 minutes, until top is golden brown and a toothpick inserted in the center comes out clean.
  4. Cool completely on a wire rack.
  5. To make the frosting, beat the butter, powdered sugar, milk, and vanilla extract with an electric mixer until smooth. Evenly spread over the cooled cake and serve. I like to sprinkle the frosted cake with a little cinnamon for an extra boost of flavor and color, but this is optional! Refrigerate any leftovers.

Notes

  • The recipe can be doubled and baked in a 9x13 baking dish.
  • Use room temperature butter, sour cream, and egg for the cake. This will help your ingredients to incorporate more smoothly.
  • Add a sprinkle of cinnamon on top of your frosted banana cake for a pretty presentation and a little flavor boost!
  • To make your banana snack cake in advance, prepare as directed 1-2 days ahead of time and store covered in the refrigerator. I do recommend removing it from the refrigerator and allowing it to come closer to room temperature about 1-2 hours before serving.
  • Store the frosted cake, covered, on the counter for up to 3 days.
  • You can also freeze your banana snack cake for up to 6 months. Allow it to thaw on the counter top before enjoying.

Nutrition Information

Calories 206kcal (10%) Carbohydrates 36g (12%) Protein 2g (4%) Fat 6g (9%) Saturated Fat 3g (15%) Cholesterol 28mg (9%) Sodium 93mg (4%) Potassium 103mg (3%) Sugar 26g (52%) Vitamin A 210IU (4%) Vitamin C 1.8mg (2%) Calcium 18mg (2%) Iron 0.6mg (3%)

Nutrition Facts

Serving: 12Serving

Amount Per Serving

Calories 206

% Daily Value*

Calories 206kcal 10%
Carbohydrates 36g 12%
Protein 2g 4%
Fat 6g 9%
Saturated Fat 3g 15%
Cholesterol 28mg 9%
Sodium 93mg 4%
Potassium 103mg 2%
Sugar 26g 52%
Vitamin A 210IU 4%
Vitamin C 1.8mg 2%
Calcium 18mg 2%
Iron 0.6mg 3%

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