These peanut butter banana cupcakes are studded with crunchy peanuts and topped with a rich buttercream frosting. They're simple to make, perfect for peanut butter lovers, and they're ready in just under an hour!
Use a fork to mash the bananas in a large mixing bowl. Then, add the egg yolks, melted butter, sugar, peanut butter, milk, sour cream, and vanilla and use electric beaters to cream everything together.
Spoon the batter into the cupcake liners, filling ⅔ full. Bake for about 11 – 13 minutes, or until a toothpick inserted into the center comes out clean. Don’t over-bake these as they will firm up as they cool.