Self-Frosting Peanut Butter Cupcakes

Okay, you got me. These treats are not going to pick up a knife all on their own and smear a nice dollop of frosting all over themselves. However, they do come out of the oven fully dressed and ready to devour! The trick is to swirl in a thick spoonful of the peanut buttery cocoa spread before baking them, and presto, your work is all done the instant the timer goes off! Now, if only layer cakes were so self-sufficient …