GUEST BLOGGER Banana Cake with Peanut Butter Frosting

Banana Cake with Peanut Butter Frosting ~ Celebrating Sweets
Hi, everyone! This is Allison from Celebrating Sweets. Today I’m sharing my recipe for a Banana Cake with Peanut Butter Frosting.
As soon as I get a few overripe bananas sitting on my counter, I immediately start thinking of all the different ways to use them. Banana bread is my usual go-to, but this time I decided to switch things up with a frosted banana snack cake.

Banana Cake with Peanut Butter Frosting - Celebrating Sweets
This cake is unbelievably simple. No mixer is needed and the batter comes together in a matter of minutes. The cake is baked in an 8×8 or 9×9 pan, and it is topped with a thick layer of peanut butter frosting. I also topped the cake generously with salted peanuts. The salty crunch of the peanuts perfectly compliments the moist cake and creamy frosting. The flavors of banana and peanut butter are a teriffic match – crazy delicious! Enjoy!

Banana Cake with Peanut Butter Frosting
Prep time
Cook time
Total time
Moist banana cake topped with creamy peanut butter frosting and garnished with chopped peanuts.
Serves: serves 12
  • 1½ cups all purpose flour
  • ¾ cup granulated sugar
  • 1 teaspoon baking powder
  • 1 teaspoon baking soda
  • ¼ teaspoon salt
  • ½ cup plain Greek yogurt
  • 1½ cups mashed ripe bananas (about 3 bananas)
  • ¼ cup canola or vegetable oil
  • 1 egg
  • 1 teaspoon pure vanilla extract
  • 4 tablespoons unsalted butter, softened
  • ¾ cup creamy peanut butter
  • 1¼ cups powdered sugar
  • ½ teaspoon pure vanilla extract
  • ⅛ teaspoon salt
  • 2-4 tablespoons whole milk, half and half or cream
  • ½ cup chopped roasted, salted peanuts,
For the cake:
  1. Preheat oven to 375°F. Butter an 8x8 or 9x9 baking pan.
  2. In a large bowl, combine flour, sugar, baking powder, baking soda, and salt. Set aside.
  3. In a separate bowl, whisk the yogurt, mashed bananas, oil, egg, and vanilla.
  4. Pour the wet ingredients into the dry and stir until just combined. Pour the batter into the prepared pan and bake for 30-40 minutes, until a toothpick inserted into the center of the cake comes out clean (begin checking at 30 minutes). If the cake begins to get dark on the top, loosely cover it with foil for the last 10 minutes of baking. Cool cake completely.
For the frosting:
  1. Beat all ingredients, except milk, until smooth and creamy. Add milk, one tablespoon at a time, until you reach your desired consistency.
  2. Using a butter knife, spread the frosting over the top of the cooled cake. Sprinkle the top with chopped peanuts.

This recipe was contributed by Allison from Celebrating Sweets


  1. That looks delicious! It incorporates my favorite things…bananas, peanut butter and cake!!! Thanks for sharing.


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