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How to thicken runny frosting

Updated July 20, 2017

Homemade frosting can be made as a sweet topping for cakes, doughnuts, brownies, and cookies. The most challenging part of making frosting can be finding the right consistency. A frosting that is too runny or too thick will be difficult to spread.

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  1. Using a spoon, test the consistency of the frosting. If it sticks to the spoon and runs off slowly, it is the right consistency. If it pour off quickly, it needs to be thickened.

  2. Thicken the frosting by adding 1 tbsp confectioners or icing sugar. Stir, then test the consistency again.

  3. Keep adding icing sugar, 1 tbsp at a time until it is the desired consistency.

  4. Tip

    For a frosting that is too thick, add a little water.

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Things You'll Need

  • icing sugar
  • spoon


About the Author

Debi Walstad has been writing professionally since March, 2010. She has written for several websites specializing in health and fitness. Walstad holds an Associate of Applied Science in education, child and family studies from Utah Valley University.

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