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How can you use flour to thicken frosting?

Updated April 17, 2017

Bakers usually suggest that you use confectioner's sugar to make frosting stiffer since it contains cornstarch (which is a thickening agent) and the sugar will blend with the icing's sweetness. When you use flour to thicken frosting, the texture will become smoother. However, flour should be used sparingly, since its starchy taste will be noticeable if too much is added to the icing.

Measure 1 tsp of all-purpose flour and add it to the bowl of icing.

Blend the flour into the icing with a hand-held mixer for three minutes or until the ingredients are completely combined.

Test the frosting's consistency by lifting the mixer's beaters from the bowl. When the icing thickens it will form small peaks. If the frosting appears thick enough, use it to frost the dessert. If it's still too thin, go to Step 4.

Add 1/2 tsp of flour to the icing and mix them together for another three minutes. Repeat Step 3 and Step 4 until the frosting reaches the right consistency.

Things You'll Need

  • Bowl of frosting
  • All-purpose flour
  • Teaspoon
  • Hand-held mixer
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About the Author

Christa Titus is a dedicated journalism professional with over 10 years writing experience as a freelancer with a variety of publications that include "Billboard" and "Radio & Records." Her writing has also been syndicated to such media outlets as the "Washington Post," the "Seattle-Post Intelligencer," the Associated Press and Reuters. Titus earned a Bachelor of Arts in journalism from Rowan College.