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This PEANUT BUTTER BANANA CAKE is so moist thanks to the bananas! We top the cake off with my mama’s famous fudge frosting. The fudgy chocolate frosting is so good with the peanut butter and banana!
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Yesterday morning my kids headed out with their grandma and I did what I always do…I headed straight to the kitchen.
I love baking in a quiet, peaceful house.
I had a pile of bananas that were begging to be baked, so I settled on a banana cake. As I got the ingredients out of the cabinets, I somehow grabbed the jar of peanut butter.
It was fate.
This peanut butter banana cake was destined to happen.
The cake is super moist with a strong banana flavor and a hint of peanut butter. The chocolate frosting is my mama’s recipe and it’s perfect for this cake.
How to make the cake:
Beat together butter and sugar until light and fluffy. Beat in eggs and vanilla.
Combine the dry ingredients in a separate bowl and add them alternately to the butter mixture with buttermilk.
Stir in mashed bananas until everything is well combined.
Bake in a 9×13 baking dish. Cool before frosting.
How to make the frosting:
Add butter, sugar, and milk to a small sauce pan and bring to a boil.
Boil for exactly 1 minute and then remove from the heat and stir in chocolate chips.
Pour the frosting over the cooled cake.
We like to top the cake with chopped walnuts. It adds a nice texture and they just look so pretty on that shiny chocolate frosting.
More banana recipes:
Peanut Butter Banana Cake with Chocolate Frosting
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
- Preheat oven to 350 degrees. Spray a 9×13 baking dish with non-stick spray.
- 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.
- In a separate bowl, combine the flour, baking soda, cinnamon, and salt.
- 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.
- Pour batter into the prepared pan and bake for 30-35 minutes or until a tester comes out clean.
- Cool completely before frosting.
For the frosting
- Add sugar, butter, and milk to a small saucepan over medium heat and bring to a boil.
- Boil for exactly 1 minute and then remove from the heat.
- Immediately stir the chocolate chips into the hot mixture until the frosting is smooth.
- Pour the chocolate frosting over the cake and sprinkle with the walnuts.
- Let cool for 20 minutes or until the frosting has firmed up.
Nutrition Information:
This recipe was originally published in May 2010. It was updated with new photos and a video in June 2020. Original photo above.
Spentley Bentley says
This is great with cream cheese as substitute for buttermilk, makes for a very dense cake but very delicious! Thanks for the idea of peanut butter, it goes great with bananas.
Holmeslice says
Sounds like 5 stars Spentley, stay Bent, cheers.
Karly says
Sounds so good with cream cheese! Thanks for sharing!
Sue says
I made this with very high expectations. I would say it was good, not great. There were two many flavors going on at once, the peanut butter got lost in the end. The chocolate frosting was amazing and could be used on any cake!
Krystle says
I love peanut butter and banana together. This cake looks like a must try. The video makes me want to make it ASAP!