Banana Peanut Butter Smash Cake

This Banana Peanut Butter Smash Cake was made with love for my son’s first birthday. It’s naturally sweetened, soft, and perfect for little hands to dig into. Made with wholesome ingredients and topped with a creamy peanut butter frosting, it’s a fun and delicious way to celebrate a sweet milestone.

No Sugar Added Birthday Cake

Banana Peanut Butter Smash Cake

Naturally Sweetened Smash Cake

This soft and naturally sweetened smash cake is made with ripe bananas and topped with a creamy peanut butter frosting. Perfect for a simple, wholesome celebration treat.

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5 from 1 Review

Prep Time:30 minutes mins

Cook Time:25 minutes mins

Total Time:55 minutes mins

Yields: 8 people

Ingredients

Cake

• 4 ripe bananas
• 2 eggs beaten
• 1 tsp baking powder
• 1 tsp cinnamon
• 1 tsp vanilla
• 1/2 cup smooth peanut butter
• 2 cups oat flour

Cream Cheese Frosting

• 250 g softened cream cheese
• 2 tbsp unsalted butter melted
• 1 tsp vanilla
• 1/4 cup maple syrup

Toppings

• Fruit of choice

Instructions

Cake

• Preheat your oven to 350°F (175°C).
• Grease and line a small round cake pan (6-inch works well).
• In a large bowl, mash the bananas until smooth.
• Add the beaten eggs, peanut butter, vanilla, cinnamon, and baking powder.
• Mix until well combined.
• Fold in the oat flour until a thick batter forms.
• Pour the batter into the prepared cake pan and smooth the top.
• Bake for 25–30 minutes, or until a toothpick comes out clean.
• Let the cake cool completely before frosting.

Frosting

• In a medium bowl, add the softened cream cheese and melted butter.
• Beat together until smooth and fluffy.
• Add the vanilla and maple syrup.
• Mix until fully combined and creamy.
• Chill in the fridge for 10–15 minutes if the frosting feels too soft.

To Assemble

• Once the cake is completely cooled, spread the cream cheese frosting evenly over the top.
• Decorate with fresh fruit of your choice — raspberries work beautifully.
• Serve immediately or refrigerate until ready to enjoy.

Watch the Recipe Below