Banana Snack Cake – put those overripe bananas on your counter to good use with this simple and delicious Banana Cake recipe! It’s topped with a delicious vanilla frosting and makes a perfect treat or snack for anytime!

For more delicious and easy Dessert Recipes, be sure to check out my Skinny Chocolate Cake, Raspberry Oatmeal Bars, and Lemon Poppy Seed Bundt Cake.

Today’s recipe is brought to you thanks to a huge bunch of overripe bananas I had last week. I’m normally a good banana eater as are my kiddos, but we weren’t able to eat them in time before the brown spots started to set in.

a cake in a metal baking pan topped with vanilla frosting and sliced bananas.

Those overripe bananas were staring me down so I decided it was time to make my favorite banana snack cake, which is the absolute best way to use up spotty bananas!

a slice of banana cake on a white plate.

I also make Butterscotch Banana Bread or Kale, Apple, and Banana Smoothies a lot with overripe bananas, but this Banana Cake with Vanilla Frosting is a family favorite!

Ingredients for Banana Snack Cake with Vanilla Frosting

A full list of ingredients, measurements, and instructions are located in the recipe card below.

  • granulated sugar
  • sour cream
  • egg
  • unsalted butter
  • bananas
  • vanilla extract
  • all purpose flour
  • baking soda
  • salt
  • powdered sugar
  • milk
ingredients in bowls on a counter top.

How to Make Banana Snack Cake with Vanilla Frosting – Step by Step

A full list of ingredients, measurements, and instructions are located in the recipe card below.

  1. Combine sugar with the wet ingredients in a medium bowl using an electric mixer.
  2. Stir in the dry ingredients.
  3. Pour into a greased square baking dish and bake until golden brown.
  4. Beat the banana cake frosting ingredients in a medium sized bowl. Spread over the cooled banana snack cake.

Tips and Notes

  • The recipe can be doubled and baked in a 9×13 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.
a spatula holding a piece of banana cake.

The Best Banana Cake Frosting

This vanilla icing recipe is the best frosting for banana cake. It’s sweet, but not too sweet, and balances the flavor of the bananas perfectly. It’s super easy to whip up, and can easily be doubled if you’re making a larger cake.

a spatula holding a slice of banana cake.
slices of cake topped with sliced bananas on white plates.

More Amazing Banana Recipes You Should Try!

If you try this recipe, please leave a comment and rating below. I love to hear from you and always appreciate your feedback!

a slice of banana cake on a white plate.
5 from 41 ratings

Recipe: Banana Cake with Vanilla Frosting

Yield: 12
Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes
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!

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
 

  • Preheat oven to 350 degrees. Spray an 8×8 baking pan with cooking spray and set aside.
  • 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. 
  • 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.
  • Cool completely on a wire rack.
  • 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 9×13 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.
Cuisine: American
Course: Dessert
Calories: 206kcal, Carbohydrates: 36g, Protein: 2g, Fat: 6g, Saturated Fat: 3g, Cholesterol: 28mg, Sodium: 93mg, Potassium: 103mg, Sugar: 26g, Vitamin A: 210IU, Vitamin C: 1.8mg, Calcium: 18mg, Iron: 0.6mg
Did you make this recipe?Let me know! Mention @TheBelleoftheKitchen on Instagram or tag #BelleoftheKitchen.