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Home » Quick and Easy Recipes

PEANUT BUTTER BANANA CAKE

Updated: May 4, 2026 · Published: Mar 10, 2025 by Sana Umer · This post may contain affiliate links · Leave a Comment

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Peanut butter banana cake is a delectable dessert that brings together the rich, creamy flavor of peanut butter with the natural sweetness of ripe bananas.

The combination of banana and peanut butter is a classic one, and when paired with this cake, it creates a melt-in-your-mouth experience that's hard to resist.

The cake itself is light, fluffy, and full of banana flavor, while the creamy peanut butter frosting adds a delicious, rich layer of sweetness.

This cake is perfect for birthdays, potlucks, or just a cozy dessert to enjoy with family and friends.

Whether you're a peanut butter lover or a banana fan, this cake will satisfy both cravings in one bite. This cake is incredibly moist and flavorful, making it the perfect treat for any occasion.

Why You Will Love This Recipe

  • Peanut Butter and Banana: The combination of peanut butter and banana is a classic, offering a rich and sweet flavor balance.

  • Moist and Fluffy Cake: The cake is soft, light, and perfectly moist, with the banana adding natural sweetness and texture.

  • Creamy Peanut Butter Frosting: The smooth peanut butter frosting is rich and complements the cake beautifully.

  • Easy to Make: With simple ingredients and minimal steps, this cake is easy to prepare and bake.

  • Perfect for All Occasions: Whether it's a casual dessert or a birthday cake, this dessert is sure to impress.

  • Customizable: You can add nuts, chocolate chips, or a drizzle of caramel to personalize the cake further.

Ingredients

For the Cake

  • 2 ripe bananas, mashed
  • ½ cup peanut butter (smooth or chunky)
  • 1 ½ cups all-purpose flour
  • 1 teaspoon baking powder
  • ½ teaspoon baking soda
  • ¼ teaspoon salt
  • ½ cup sugar
  • ½ cup brown sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • ½ cup whole milk
  • ¼ cup melted butter

For the Frosting

  • ½ cup peanut butter (smooth or chunky)
  • ¼ cup unsalted butter, softened
  • 2 cups powdered sugar
  • 2-3 tablespoons milk (adjust for consistency)
  • 1 teaspoon vanilla extract

Directions

  • Step No.1: Preheat the oven
    Preheat your oven to 350°F (175°C). Grease and flour a 9x9-inch baking pan or two 8-inch round cake pans.

  • Step No.2: Prepare the cake batter
    In a large mixing bowl, whisk together the flour, baking powder, baking soda, and salt.

  • In another bowl, beat together the sugar, brown sugar, eggs, vanilla, and mashed bananas.

  • Stir in the peanut butter, melted butter, and milk until the mixture is smooth and combined.

  • Step No.3: Mix and bake
    Gradually add the dry ingredients to the wet ingredients and mix until just combined. Pour the batter into the prepared baking pan(s) and smooth the top.

  • Bake for 30-35 minutes (for a 9x9 pan) or 20-25 minutes (for round pans) until a toothpick inserted into the center comes out clean.

  • Step No.4: Cool the cake
    Allow the cake to cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.

  • Step No.5: Make the frosting
    While the cake cools, beat the peanut butter and softened butter together in a mixing bowl until smooth.

  • Gradually add powdered sugar and 1 tablespoon of milk at a time until you reach a smooth and spreadable consistency. Stir in vanilla extract.

  • Step No.6: Frost the cake
    Once the cake is completely cooled, spread the peanut butter frosting evenly over the top. If desired, garnish with chopped peanuts or banana slices.

  • Step No.7: Serve
    Slice, serve, and enjoy! This cake pairs perfectly with a cup of coffee or milk.

Tips for Success

  • Use ripe bananas: The riper the bananas, the sweeter and more flavorful the cake will be. Overripe bananas work best.

  • Don’t overmix the batter: Mix the wet and dry ingredients until just combined to avoid a dense cake.

  • Peanut butter variety: Choose your preferred peanut butter, whether it’s creamy or chunky. Both work well in the cake and frosting.

  • Frost after cooling: Make sure the cake is completely cooled before frosting to prevent the frosting from melting.

  • Add mix-ins: For extra texture, add chocolate chips or crushed peanuts to the batter before baking.

Variations

  • Chocolate drizzle: Drizzle melted chocolate over the frosting for a decadent addition to the cake.

  • Add chocolate chips: Stir in ½ cup of chocolate chips into the cake batter for a chocolatey twist.

  • Banana walnut: Add ½ cup of chopped walnuts to the batter to complement the banana flavor.

  • Use almond butter: For a different nutty flavor, swap the peanut butter for almond butter or cashew butter.

  • Make it vegan diet: Substitute the eggs with flax eggs, use non-dairy milk, and choose plant-based butter and peanut butter.

Serving and Storage

Serving:

Serve this peanut butter banana cake at room temperature, ideally with a glass of milk or a warm cup of coffee.

Storage:

Store leftovers in an airtight container at room temperature for up to 3 days or in the refrigerator for up to 5 days.

FAQ

Can I make this cake ahead of time?

Yes, you can prepare this cake ahead of time and store it in an airtight container for up to 3 days or freeze it for longer storage.

Can I use peanut butter spread instead of peanut butter?

It’s best to use pure peanut butter rather than peanut butter spread, as spreads typically contain added oils and sugars that can affect the texture of the cake.

Can I use a different frosting?

Yes, you can use cream cheese frosting or chocolate frosting if you prefer a different flavor.

Can I add a glaze to this cake?

Yes, you can make a simple glaze by mixing powdered sugar with milk or heavy cream and drizzling it over the cake for extra sweetness.

Peanut butter banana cake is a deliciously indulgent treat that brings together the perfect combination of banana sweetness and peanut butter richness.

The moist cake and creamy frosting make it a perfect dessert for any occasion, from birthdays to casual get-togethers.

With a few simple ingredients and easy steps, you can create a show-stopping dessert that will have everyone coming back for seconds.

Try this cake today and enjoy the irresistible pairing of peanut butter and banana in every bite!

PEANUT BUTTER BANANA CAKE

Sana Umer
This Peanut Butter Banana Cake is a moist and flavorful dessert, combining ripe bananas and creamy peanut butter. Topped with a rich peanut butter glaze, it’s perfect for any occasion and sure to be a family favorite!
Print Recipe Pin Recipe
Prep Time 15 minutes mins
Cook Time 35 minutes mins
Total Time 50 minutes mins
Course Dessert
Cuisine American
Servings 12 people
Calories 320 kcal

Ingredients
  

  • For the Cake:
  • 2 cups all-purpose flour
  • 1 teaspoon baking soda
  • ½ teaspoon baking powder
  • ½ teaspoon salt
  • ½ teaspoon cinnamon
  • ½ cup unsalted butter softened
  • ½ cup peanut butter
  • 1 cup granulated sugar
  • ½ cup brown sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 3 ripe bananas mashed
  • ½ cup buttermilk
  • For the Peanut Butter Glaze:
  • ½ cup peanut butter
  • 1 cup powdered sugar
  • 3 tablespoons milk
  • 1 teaspoon vanilla extract

Instructions
 

  • Step 1: Preheat & Prep – Preheat oven to 350°F (175°C). Grease a 9x13-inch baking dish.
  • Step 2: Mix Dry Ingredients – In a bowl, whisk together flour, baking soda, baking powder, salt, and cinnamon.
  • Step 3: Cream Butter & Sugars – In another bowl, beat butter, peanut butter, granulated sugar, and brown sugar until fluffy. Add eggs and vanilla, then mix in mashed bananas.
  • Step 4: Combine & Bake – Gradually add dry ingredients, alternating with buttermilk. Pour batter into prepared pan and bake for 35 minutes or until a toothpick comes out clean.
  • Step 5: Make the Glaze – Whisk together peanut butter, powdered sugar, milk, and vanilla until smooth.
  • Step 6: Glaze & Serve – Pour glaze over the cooled cake. Slice and enjoy!

Notes

  • Make Ahead: Bake the cake a day in advance and glaze before serving.
  • Customizing the Flavor: Add chocolate chips or chopped nuts for extra texture.
  • Serving Suggestions: Pair with vanilla ice cream or a glass of milk.
  • Storage Tips: Store in an airtight container at room temperature for up to 3 days.
Keyword banana dessert, easy cake recipe, peanut butter banana cake, peanut butter glaze

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About Sana Umer

I'm Sana Umer — the home cook behind every recipe on For Foodie Friends. I'm a Pakistani-American mom of two based in the US, and I've been cooking seriously for about a decade now, mostly because feeding a family every day is the fastest way to learn how to actually cook.

I'm completely self-taught. I learned by watching my mother in Pakistan, by burning a lot of food in my early years, and by paying attention to which recipes worked and which ones needed fixing. I don't specialize in just one cuisine — I cook the Pakistani dishes I grew up with, the American desserts my kids request, weeknight dinners, holiday roasts, and everything in between.

Every recipe is personally tested in my own kitchen, every word is written by me, and every photo is taken of food I actually made.

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Hi, I'm Sana Umer — the home cook, recipe tester, and writer behind For Foodie Friends.

I'm a Pakistani-American mom based in the US. I learned to cook in two kitchens — my mother's in Pakistan, where I grew up watching whole spices bloom in oil, and my own kitchen now, where I cook for my husband and kids.

Every recipe on this site has been tested in my own kitchen, often more times than I'd like to admit, before it ever made it here. I cook a little bit of everything: the Pakistani comfort food I grew up with, the American desserts my kids beg for, weeknight dinners that need to come together fast, and the holiday spreads that take all day.

If a recipe is on this site, it earned its place. No ghostwriters, no AI shortcuts, no copy-paste from somewhere else — just real recipes from a real kitchen, written to actually work the first time you make them.

Welcome to my corner of the internet.

— Sana

More about me →

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