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Rainbow Doughnut Icing

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Rainbow Doughnut Icing
  • Prep 30 min
  • Total 30 min
  • Servings 40
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How fun is this rainbow doughnut icing? Spread it on your freshly made cake doughnuts, (or store-bought, we won't tell!) for a treat that's guaranteed to wow.
Updated Sep 20, 2016


  • 4 1/2 cups powdered sugar
  • 6 tablespoons milk
  • 4 tablespoons light corn syrup
  • Red, orange, yellow, green, blue and purple gel icing color (not liquid food color)
  • 12 Cake Doughnuts or purchased plain cake doughnuts


  • 1
    In large bowl, mix powdered sugar, milk and corn syrup until smooth. Divide icing evenly among 6 small bowls. Add a different color gel to each bowl; stir to blend. Place each color icing in small resealable food-storage plastic bag. Cut off tiny corner of each bag.
  • 2
    Place cooling rack on large cookie sheet; place doughnuts on rack. To make a rainbow on each doughnut, pipe one stripe of red, orange, yellow, green, blue and purple icing over top and slightly over edge of doughnut so that colors just touch. Pipe 1 or 2 doughnuts at a time so icing can blend together slightly before setting. The icing will spread slightly and drip down sides. Let stand at least 30 minutes or until icing is set. Store in tightly covered container.

Tips from the Betty Crocker Kitchens

  • tip 1
    The icing may seem thick at first, but don't be tempted to thin it. It will flow just enough to drip slightly down the side of each doughnut. If it's too thin, it won't set up and will run off the doughnut.
  • tip 2
    Try coloring the icing red, white and blue for a patriotic theme or the colors of your favorite sports team. Experiment with different patterns: spoon one color over the top, then add drops of another color. Watch the pattern it makes as the icing spreads. Kids will love to experiment with this.
  • tip 3
    Immediately after icing the doughnuts, sprinkle with colored sugar or edible glitter.


Nutrition Facts

Serving Size: 1 Serving
Calories from Fat
Trans Fat
% Daily Value*:
Vitamin A
Vitamin C
Carbohydrate Choice
*Percent Daily Values are based on a 2,000 calorie diet.
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