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Easy Sugar Cookie Icing Recipe That Hardens Smoothly

A hand holding a freshly baked sugar cookie topped with thick, creamy white sugar cookie icing and white nonpareils.
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Follow these simple steps to create a smooth, glossy sugar cookie icing that hardens perfectly, ideal for detailed decorating without sticking. This recipe is approachable for all skill levels.

Ingredients

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  • 4 cups powdered sugar, sifted
  • 3 tablespoons meringue powder
  • 1/2 teaspoon vanilla extract
  • 1/4 cup water, plus more as needed

Instructions

  1. In a medium bowl, whisk together the sifted powdered sugar and meringue powder until fully combined.
  2. Add the vanilla extract and 1/4 cup of water to the dry ingredients.
  3. Beat the mixture with an electric mixer on low speed until the ingredients are incorporated.
  4. Increase the speed to medium-high and beat for 3 to 5 minutes until the icing is smooth and holds stiff peaks. This consistency is perfect for outlining cookies.
  5. If the icing is too thick for flooding (filling in areas), add water, one teaspoon at a time, beating well after each addition, until the icing flows slowly off the whisk in a ribbon that disappears into the bowl after about 10 seconds.
  6. Divide the icing into bowls if you plan to color it. Add gel food coloring sparingly and mix until the color is uniform.
  7. Use the icing immediately to outline your sugar cookies. Let the outline dry for 15 to 30 minutes until firm to the touch.
  8. Thin remaining icing slightly with a few drops of water if needed, then use a spoon or piping bag to fill in the outlined areas.
  9. Allow the cookies to dry completely at room temperature for several hours, or overnight, until the icing is hard and not sticky.

Notes

  • For detailed decorating, keep the icing thick (stiff peaks). For flooding, thin it slightly with water until it reaches a 10-second count ribbon consistency.
  • Use gel food coloring instead of liquid coloring to prevent thinning the icing consistency too much.
  • If you are planning your weekly meals, this icing is a great addition to your meal planning for fun weekend baking projects.
  • Store leftover icing covered tightly at room temperature for up to two days; do not refrigerate.

Nutrition

Find it online: https://www.purecookingjoy.com/sugar-cookie-icing-recipe-smooth-hard-set/

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