Oh yes I did.
I used a basic cake mix for this but added a few unique touches. After allowing the cupcakes to completely cool I filled a long tip squeeze bottle with grape jelly, poked it into the top of each and squeezed a little jelly goodness into the center of each one. Then I made the icing using peanut butter, cream cheese, powdered sugar and a touch of milk.
I know a certain pre-k class that devoured them along with a couple teachers.