Combine 1 box any flavor cake mix with 1 can room-temperature soda in any flavor. (We're partial to chocolate mix and Coca-Cola.) Whisk until smooth. Pour batter into a lined muffin tin. Bake for 18 minutes at 350° until a toothpick emerges clean. Let cool completely, then top with whipped cream. Makes 12 cupcakes.
Next: 6 more spectacular 3-ingredient recipes