Chocolate + Peanut Butter + Cupcakes = Yes. At first I thought it was chocolate chip cookie dough on the very top-- which makes me think that could be tried, too. Chocolate batter, gob of peanut butter in the middle, cookie dough on top.
Boyfriend Cookies: 1 c softened butter - ¼ c white sugar - ¾ c brown sugar - oz. instant vanilla pudding mix - 2 eggs - 1 t vanilla extract - c flour - 1 t baking soda - 1 c milk chocolate chips - 1 c semisweet chocolate chips - ½ c white chocolate chips