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Rainbow Cupcakes with Buttercream Frosting

Rainbow Cupcakes with Buttercream Frosting

5 from 1 vote
Prep Time 10 mins
Cook Time 20 mins
Total Time 30 mins
Course Dessert
Cuisine American
Servings 24
Calories 120 kcal


Cupcake Ingredients:

  • 1 white cake mix
  • 1 cup water
  • 1/3 cup vegetable oil
  • 3 large egg white
  • ¾ cup ricotta cheese
  • Cupcake liners
  • Red orange, yellow, green, blue, and purple gel food coloring

Frosting Ingredients

  • 1 1/2 sticks salted butter softened
  • 1 teaspoon vanilla
  • 4 cups powdered sugar
  • 1 tablespoon half and half or whole milk
  • Lorann marshmallow flavored syrup Find it on Amazon
  • 1 large piping bag 1 large round frosting tip
  • Rainbow colored sprinkles (Find them on Amazon


Directions for Cupcakes:

  • Preheat oven to 350 degrees. Spray or line a standard muffin tin.
  • Add cake mix to a large mixing bowl. Using a hand or stand mixer, mix in your water, oil, and eggs on medium until well incorporated. Mix in the ricotta cheese.
  • Evenly separate the batter into 6 containers and color each with the 6 food colors until desired color of each is achieved.
  • Add a small spoonful of each color of the batter into the muffin tin until each is about 2/3 full. Bake for 18-20 minutes, or until a toothpick comes out clean. Allow to cool completely before frosting.

Directions for Frosting:

  • In a large mixing bowl or stand mixer, cream the butter, and beat until light and fluffy. Add in the vanilla extract.
  • Slowly mix in the powdered sugar, 1 cup at a time, while adding a bit of the half and half or milk in between each cup. Continue to mix for 1 minute or until creamy. Add in your marshmallow flavoring.
  • Prepare piping bag and fill bag with frosting. Frost your cupcakes and top each cupcake with the rainbow sprinkles. Enjoy!


Calories: 120kcalCarbohydrates: 20gProtein: 1gFat: 4gSaturated Fat: 3gPolyunsaturated Fat: 1gMonounsaturated Fat: 1gCholesterol: 4mgSodium: 14mgPotassium: 16mgFiber: 1gSugar: 20gVitamin A: 35IUCalcium: 17mgIron: 1mg
Keyword easy cupcakes, kids party food
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