Close up of peanut butter banana cake. Topped with peanut butter frosting and chopped Reese's candy.

Peanut Butter Banana Cake

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This is the most amazing peanut butter banana cake you will ever taste! My grandma used to make this cake on special occasions and it was always a huge hit. This cake is light, fluffy, and covered in a peanut butter frosting glaze. It is always a crowd favorite!

Peanut butter cake on a white stand with a slice cut out and peanut butter sauce.

This cake brings back some amazing childhood memories, I love when food will do that! My grandma was an amazing cook, she was always making the most creative and delicious food. I was asking my mom for this recipe the other day and she said she did not have it. I was super bummed because my grandma died a couple of years ago and I was worried this peanut butter cake was gone forever. But, my mom called me a couple of days later to tell me she found the recipe! I was so excited! It was crazy she was even able to find it because it was just jotted down on a piece of scrap paper with no title, but she knew it was it!!!!

If you are anything like me you hate to throw food away. I always love to make banana bread if I end up with older bananas but I wanted to find another dessert with bananas to add into the rotation. This recipe is defiantly a keeper, my family loved it! It is super easy to put together and the peanut butter frosting adds so much flavor.

How To Make Peanut Butter Banana Cake

I love that this banana cake is simple and easy to make. It is a light fluffy cake with tons of flavor. It doesn’t call for any weird ingredients and I usually have everything on hand to make it. If you really wanted to have fun with this cake you could always add chocolate or peanut butter chips to it.

  1. Mix 1 cup of mashed ripe banana and 1/2 cup of softened margarine really well.

2. Add 1/2 cup of creamy peanut butter and mix.

3. Mix in 1 cup of whipping cream and 3 eggs.

4. Add 1 pkg of butter cake mix and 2 tbsp. of flour. Mix well.

5. Place batter in either a 13×9 inch pan or two round pans and bake according to package. Check occasionally making sure not to over bake.

6. After removing the cake from the oven let it cool completely before frosting.

How To Make Frosting

This frosting was delicious with the additional vanilla added to it. Adding the vanilla extract to the frosting and whipping them together also helps to create a lighter fluffier frosting that is easier to work with. If you don’t have vanilla frosting on hand you could also use a homemade buttercream on this cake and it would be delicious.

  1. Whip together 1 container of vanilla frosting and 1/2 tsp. of vanilla extract. Cover with plastic wrap and set aside.

How To Make Peanut Butter Frosting Glaze

I firmly believe that this peanut butter frosting glaze is what makes this cake. It is delicious! Whatever you do, do not skip this!

  1. Mix together 1/2 cup of powder sugar, 2 tbsp peanut butter, 3 tbsp milk, and 1/2 tsp vanilla extract. Cover with plastic wrap and set aside.
Peanut butter cake on a white stand with a slice of cake on a white plate.

Tips For Frosting This Peanut Butter Cake

  1. Whether you made a 13×9 or two rounds make sure you cool the cake(s) completely. This step is so important do not skip it. Skipping this step will melt the frosting, changing the consistency and texture.

2. If you made two round cakes, I would suggest putting them in the freezer to cool. When frosting a layered cake it is easier to work with when it is semi-frozen. Another tip is you put a little frosting underneath the cake and between the layers. It will hold the cake together better, and make it easier to frost. Your first layer will become the crumb layer. It is a thin layer that will hold all the crumbs in so when it put the second layer on there won’t be crumbs to deal with. After the first layer put the cake in the freezer and let the frosting get nice and cold before adding the second layer.

3. If you did a 13×9 inch cake, frost like normal leaving the cake in the pan.

4. The final step in this cake is to add the peanut butter frosting glaze. When my grandma would make this cake she would use a spoon and drizzle it on the cake and it always looked so pretty. You could also use a pastry bag and tip if you wanted a more controlled look. When I decorated my cake (shown in the pictures) I started pouring the glaze in the center of the cake and let it run off the edges. I really love the way it turned out!

5. I chose to use Reese Peanut Butter Cups to add some texture to the top of the cake. You could also use chocolate chips, Reese’s Pieces, or peanut butter chips.

Tips For Storing This Peanut Butter Banana Cake

Make-ahead storing- This cake can easily be made 2-3 days beforehand. Just store the UN-frosted cake in the refrigerator in an airtight container or double wrapped in cellophane.

Storing– You can store this cake on the counter for 1-2 days in an air tight container. For optimal freshness, and to keep the cake nice and moist I would recommended storing in the refrigerator in an air tight container.

Close up of peanut butter banana cake. Topped with peanut butter frosting and chopped Reese's candy.

Peanut Butter and Banana Cake

Shanna
This is the most amazing peanut butter banana cake you will ever taste! My grandma used to make this cake on special occasions and it was always a huge hit. This cake is light, fluffy, and covered in a peanut butter frosting glaze. It is always a crowd favorite!
5 from 1 vote
Prep Time 10 mins
Cook Time 30 mins
Total Time 40 mins
Course Dessert
Cuisine American
Servings 12 servings

Ingredients
  

  • 1 cup Mashed ripe banana
  • 1/2 cup Margarine softened
  • 1/2 cup Creamy peanut butter
  • 1 cup Whipping cream
  • 3 Eggs
  • 1 pkg Butter cake mix
  • 2 Tbsp Flour

Frosting

  • 1 pkg Vanilla frosting
  • 1/2 tsp Vanilla extract

Glaze

  • 1/2 cup Powder sugar
  • 2 tbsp Creamy peanut butter
  • 3 tbsp Milk
  • 1/2 tsp Vanilla extract

Instructions
 

  • Preheat oven to 350°
  • Grease and flour either a 13×9 inch pan or two round pans.

Cake Mix

  • Mix 1 cup of mashed ripe banana and 1/2 cup of softened margarine really well.
  • Add 1/2 cup of creamy peanut butter and mix.
  • Mix in 1 cup of whipping cream and 3 eggs.
  • Add 1 pkg of butter cake mix and 2 tbsp. of flour. Mix well.
  • Place batter in either a 13×9 inch pan or two round pans and bake according to package. Check occasionally making sure not to over bake.
  • After removing cake from oven let it cool completely before frosting.

Frosting

  • Whip together 1 container of vanilla frosting and1/2 tsp. of vanilla extract. Cover with plastic wrap and set aside.

Glaze

  • Mix together 1/2 cup of powder sugar, 2 tbsp peanut butter, 3 tbsp milk, and 1/2 tsp vanilla extract. Cover with plastic wrap and set aside.

How to Frost

  • If you are using frosting a 13×9 inch cake simply frost and drizzle the peanut butter glaze over the top and serve.
  • If you are frosting two rounds make sure to put a layer of frosting in between them to hold them together. Frost the outside of the cake, and drizzle the glaze over the top.
  • If you would like to add a little extra you can sprinkle cut up Reeses Peanut Butter Cups over the top.

Notes

Nutrition Disclaimer: All information presented on this site is intended for informational purposes only. Nutrition facts are an estimate and not guaranteed to be accurate. I am not a certified nutritionist and any nutritional information shared on Modernmealmakeover.com should only be used as a general guideline.
Keyword Banana Cake, Peanut Butter Banana Cake, Peanut Butter Cake
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