Tie-Dyed Cupcakes

Directions

1. Preheat oven to 350°. In a large bowl, combine cake mix and soda. Beat on low speed 30 seconds. Beat on medium 1 minute. Divide batter among five bowls. Add a few drops of food coloring to each bowl; stir just until combined.
2. Drop a spoonful of one color of batter into each of 18 paper-lined muffin cups. Layer with remaining colored batter until muffin cups are two-thirds full.
3. Bake 18-20 minutes or until a toothpick inserted in the center comes out clean. Cool for 10 minutes before removing from pans to wire racks to cool completely.
4. Frost tops and decorate with sprinkles.