Cake, jelly, peanut butter, and chocolate... how can you go wrong with this combination? This makes a lot of frosting, but if the kids are helping, they might leave just enough for the cupcakes. I just double the cupcake recipe, or you could half the frosting recipe. The frosting is so good, my dad, who normally doesn't eat too much sweets, just wanted to eat it straight from the bowl! I tweaked it just a little, and it got even better! It's perfect... light, fluffy, peanut buttery goodness. If you like, you could use your favorite jam or jelly in place of the grape jelly. From Food Network.