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Cookie Icing Recipe

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This quick and easy cookie icing is perfect for decorating sugar cookies, gingerbread, or any of your favorite cookies! It dries hard with a glossy finish, making it great for detailed designs or simple coatings. Ideal for any holiday or celebration.

Ingredients

Scale
  • 2 cups powdered sugar
  • 2–3 tablespoons milk (or water for a dairy-free option)
  • 1 tablespoon light corn syrup
  • 1 teaspoon vanilla extract (or almond extract for a flavor twist)
  • Food coloring (optional)

Instructions

  • Mix the Base: In a medium bowl, whisk together the powdered sugar, 2 tablespoons of milk, and corn syrup. Stir until smooth and shiny. Add more milk, a teaspoon at a time, if the icing is too thick.
  • Flavor and Color: Stir in the vanilla extract. If using food coloring, divide the icing into separate bowls and mix in colors as desired.
  • Adjust Consistency: For outlining cookies, the icing should hold its shape when piped. For flooding (filling in designs), thin the icing with a few drops of milk until it’s slightly runny.
  • Decorate: Transfer the icing to piping bags with fine tips or use a spoon to drizzle over cookies. Let the decorated cookies sit at room temperature for 12–24 hours to allow the icing to fully set.

Notes

  • Storage: Leftover icing can be stored in an airtight container in the refrigerator for up to 3 days. Stir well before use.
  • Vegan Option: Use water instead of milk and ensure your powdered sugar is vegan-friendly.
  • Glossy Finish: The corn syrup helps create a shiny, hard finish. Do not skip it for the best results.