Peanut Butter Birthday Cupcakes with Banana Buttercream Frosting
 
Hands-on time
Cook time
Total time
 
Author:
Yields: 10-12 cupcakes
Ingredients
For the peanut butter cupcakes:
  • 1/4 cup (1/2 stick) unsalted butter, softened
  • 1/2 cup smooth peanut butter
  • 1/2 cup packed brown sugar
  • 1 egg
  • 2 tsp vanilla extract
  • 1 1/4 cup all-purpose flour
  • 1 tsp baking soda
  • 1/4 tsp kosher salt
  • 2/3 cup milk (I used plain unsweetened almond milk)
For the banana buttercream:
  • 1 ripe banana, mashed (not overripe!)
  • 1/2 cup (1 stick) unsalted butter, softened
  • 1 tsp lemon juice
  • 1/2 tsp vanilla extract
  • pinch of salt
  • 3 cups powdered sugar
To top (optional):
  • Peanut butter
  • Finely chopped toasted peanuts
Instructions
  1. Preheat oven to 350 and place liners in cupcake tins.
  2. In a large bowl, beat together the butter, peanut butter and brown sugar for several minutes until light and fluffy. Add egg and vanilla and beat until smooth.
  3. In a separate medium bowl, sift together the flour, baking soda, and salt. Add the dry ingredients to the peanut butter mixture, alternating with the almond milk, beating well after each addition.
  4. Spoon batter into lined cupcake tins, filling each about 2/3 full. Bake until a toothpick inserted in the center of a cupcake comes out with moist crumbs, 18-20 minutes. Remove and cool completely before frosting.
  5. While cupcakes cool, make frosting. With a hand mixer (or stand mixer if you have one!), cream together the banana, butter, lemon juice, vanilla and salt. Beat in the powdered sugar, 1 cup at a time, until you have a creamy and spreadable frosting.
  6. Once cupcakes are completely cool, spread each with a thin layer of peanut butter, about a 1/2 teaspoon (optional). Spread or pipe with icing and sprinkle immediately with crushed peanuts, if using.
  7. Enjoy!
Notes
Adapted from Eat, Live, Run and AllRecipes.com.
Recipe by Coffee & Quinoa at https://www.coffeeandquinoa.com/2013/03/peanut-butter-birthday-cupcakes-with-banana-buttercream-frosting/