Use your muffin pan to make cookie ice cream bowls. Any of the basic drop cookies—chocolate chip, sugar, oatmeal raisin—will work. Follow the recipe, but in place of spooning little balls of dough onto a cookie sheet, turn a muffin pan upside down and form the dough around the cups. Bake the tin with the dough cups facing up. Once the bowls are golden, remove the pan from the oven, let them cool and then fill with fruit, ice cream, chocolate mousse, pudding or other treats.