overhead shot of decorated Christmas sugar cookies

Sugar Cookie Icing Recipe

  • Author: Beyond Frosting
  • Prep Time: 5 minutes
  • Cook Time: 0 minutes
  • Total Time: 5 minutes
  • Yield: 24 cookies


This easy icing recipe makes decorating sugar cookies a breeze. It’s only 4 ingredients and takes 5 minutes to make.  Create bright and beautiful decorated cookies or a gorgeous marble effect.


  • 2 cups powdered sugar, sifted
  • 1 tablespoon corn syrup
  • 23 tablespoons milk
  • 1/41/2 teaspoon extract (optional: vanilla, almond, peppermint or lemon)


  1. Combine the sifted powdered sugar and 2 tablespoons of milk in a bowl and whisk until well combined,  then Whisk in the corn syrup. If needed, add additional milk 1 teaspoons at a time to thin out the frosting. If too thin, add an additional 1/4 cup powdered sugar.
  2. To color the icing, divide the icing into separate bowls. Add a small drop of your gel colors to the icing. Mix thoroughly.
  3. To create the marble effect: set aside 1/4 cup of the white icing and divide the remaining icing into bowl. Add one small drop of gel color and use a toothpick to gently swirl the gel.
  4. Gently dip the top of each cookie into the icing and then tilt the cookie to the side to allow excess icing the drip off. Place on a silicone baking mat or parchment paper and allow to dry completely.


You’ll love my quick and easy sugar cookie recipe, they’re soft, not overly sweet and only 30 minute chill time.

How to adjust the consistency: To make the icing thinner, add additional milk 1 teaspoon at a time. You want it to be drippy but not runny. If you think your frosting is too thin, add more powdered sugar ¼ cup at a time.

Storage: The icing does dry completely, meaning you’ll be able to stack these cookies once they are fully dry. It can take anywhere from a couple hours to overnight depending on how thick your icing is. You can cover the cookie sheet with foil, but don’t let it touch the cookies. Let these dry completely on a cookie sheet before stacking and then store in an airtight container.

  • Category: Frosting
  • Method: Whisked
  • Cuisine: American

Keywords: Marble Icing, Sugar cookie icing, Cookie Icing, Easy cookie icing