Cost per serving: 30¢
We cut the fat down in this cupcake recipe using low-fat buttermilk. If you don't have buttermilk on hand, use low-fat plain yogurt instead. To give these rich-tasting cupcakes a grown-up edge, dissolve 1 to 2 tsp. instant coffee or instant espresso in the vanilla extract before beating it in.
See recipe: Cocoa Cupcakes