Birthday Cake Peanut Butter
A Birthday Cake Peanut Butter flavored with peanut butter combines the rich, nutty taste of peanut butter with the sweetness of traditional cake. The cake is often layered with creamy peanut butter frosting and decorated with festive toppings, making it a perfect treat for peanut butter lovers celebrating a special occasion.
Equipment
- 2 round cake pans (9-inch)
- Electric mixer or stand mixer
- Mixing bowls
- Measuring cups and spoons
- Rubber spatula
- Cooling rack
- Cake stand or platter
- Piping bag (optional, for frosting design)
Ingredients
For the Peanut Butter Cake:
- 2 ¼ cups all-purpose flour
- 1 ½ cups sugar
- 2 tsp baking powder
- 2 tsp baking soda
- 1 tsp salt
- 1 ½ cups buttermilk room temperature
- 1 cup unsalted butter softened
- 4 large eggs room temperature
- 1 ¼ cups creamy peanut butter smooth
- 2 tsp vanilla extract
For the Peanut Butter Frosting:
- 1 ¼ cups creamy peanut butter
- 6 oz cream cheese softened
- 5 cups powdered sugar
- 4 tsp vanilla extract
- 4 –5 tbsp milk as needed for consistency
- Pinch of salt
For the Decorative Topping:
- Mini peanut butter cups optional, for garnish
- Sprinkles optional, for color
Instructions
Preheat & Prepare:
- Preheat oven to 350°F (175°C). Grease and flour two 9-inch cake pans.
Make the Cake Batter:
- In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt. In a separate bowl, beat the buttermilk, softened butter, eggs, peanut butter, and vanilla extract until smooth. Gradually add the dry ingredients to the wet ingredients and mix until combined.
Bake:
- Divide the batter evenly between the two prepared pans. Bake for 25-30 minutes, or until a toothpick inserted comes out clean. Let the cakes cool in the pans for 10 minutes, then remove and cool completely on a wire rack.
Make the Frosting:
- Beat the peanut butter and cream cheese together until smooth. Gradually add powdered sugar, vanilla extract, milk, and a pinch of salt. Beat until smooth and fluffy, adding more milk if needed to achieve desired consistency.
Assemble the Cake:
- Once the cakes are completely cooled, spread a layer of frosting on the top of one cake. Place the second cake on top and frost the entire cake with the peanut butter frosting.
Decorate:
- Garnish with mini peanut butter cups and sprinkles, if desired.
Serve & Enjoy:
- Slice and serve the cake, enjoy the creamy peanut butter goodness!
Notes
✦ Storage: Store leftover Birthday Cake Peanut Butter in an airtight container at room temperature for up to 3 days.
If you have extra frosting, it can be kept in the fridge for up to 5 days. You can also freeze the cake for longer storage—just wrap it tightly in plastic wrap and aluminum foil before freezing.
✦ Room Temperature Ingredients: Make sure your butter, eggs, and buttermilk are at room temperature before mixing. This helps create a smoother batter and better texture in the final cake.
✦ Customization: Feel free to experiment with different frostings, like a chocolate ganache or marshmallow frosting, for a unique twist on this peanut butter birthday cake.