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Glossy Sugar Cookie Icing That Hardens Firmly

Plate of sugar cookies topped with brightly colored sugar cookie icing that hardens, featuring blue, pink, orange, and yellow frosting.
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Welcome! I’m Sarah, and I’m so happy you’re here. This easy recipe gives you the exact texture you want so your cookies look fantastic after baking. You will get a beautiful, durable finish perfect for gifting or serving at parties. Learn how to mix this sugar cookie icing that hardens completely.

Ingredients

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  • 2 cups powdered sugar, sifted
  • 3 tablespoons milk (whole or plant-based)
  • 1 tablespoon light corn syrup
  • 1 teaspoon vanilla extract
  • Gel food coloring, assorted (optional)

Instructions

  1. Place the sifted powdered sugar into a medium bowl.
  2. Add the milk, light corn syrup, and vanilla extract to the sugar.
  3. Whisk the ingredients together until the mixture is smooth. You are aiming for a thick but pourable consistency, similar to honey.
  4. If the icing is too thick, add milk, one half teaspoon at a time. If it is too thin, add more sifted powdered sugar, one tablespoon at a time.
  5. If you want colored icing, divide the base icing into separate bowls and mix in gel food coloring until you reach your desired shade.
  6. Use a small spoon or piping bag to apply the icing to your cooled sugar cookies.
  7. Allow the cookies to sit at room temperature until the icing is completely dry and hard to the touch. This may take several hours or overnight for a thick coat.

Notes

  • For a bright white, glossy icing, use clear vanilla extract instead of standard vanilla.
  • This icing sets solid, making your cookies stackable and gift-ready.
  • For intricate decorating, thin the icing slightly more to achieve a ‘flood’ consistency.

Nutrition

Find it online: https://cutcooktaste.com/sugar-cookie-icing-that-hardens/