15ozwhite cake mixplus ingredients called for on back of the box
red food coloring
blue food coloring
1cupbutterroom temperature
3cupspowdered sugar
1/2tspsalt
2tbspmilkdivided
blueberries and sliced strawberries
Instructions
Beat white cake mix with ingredients called for on box.
Place 1 1/3 cup batter into three separate bowls. In one bowl mix in 1/2 teaspoon red food coloring. In the second bowl, mix in 1/2 teaspoon blue food coloring. Leave the third bowl plain.
Line 24 muffin cups with paper liners. Layer each muffin cup with 1 tablespoon red batter, 1 tablespoon white batter, and 1 tablespoon blue batter.
Bake at 350 for 14-19 minutes or until a cake tester comes out clean. Allow cupcakes to cool completely.
For frosting, beat butter until smooth. Add in salt. Add in powdered sugar 1 cup at a time. Add 1-2 tablespoons milk to get a creamy consistency.
Pipe or spread frosting on cupcakes and top with sliced strawberries and blueberries.