Powdered Sugar Substitutes — What to Use Instead

Also known as icing sugar, confectioners sugar, pisi cheeni, boora.

Despite looking like a milder form of granulated sugar, powdered sugar is really an engineered ingredient — sucrose milled to a few microns and cut with about 3% cornstarch to keep it from caking. Substituting means recreating both the particle size and the starch buffer, not just matching sweetness.

1 substitute optionsExact ratio guidanceRecipe-specific notes
Reviewed by the CupOrGram Editorial TeamSources: King Arthur Baking, USDA FoodData CentralMethodology
Best First Pick

Blended Granulated Sugar

Use Blend 1 cup granulated sugar + 1 tbsp cornstarch until powdery for the closest replacement in most recipes.

Blended granulated sugar with cornstarch is the only true 1:1 substitute: 1 cup granulated sugar plus 1 tablespoon cornstarch, pulverised in a high-speed blender for 30-60 seconds until it falls in a fine dust.

View adjustment notes →

Quick Ratio Cheat Sheet

Blended Granulated SugarBlend 1 cup granulated sugar + 1 tbsp cornstarch until powdery
Excellent: 1Good: 0Moderate: 0

When the best swap works

  • Royal icing and glaze for sugar cookies — the homemade blend dissolves cleanly once you let it rest 5 minutes for the larger fragments to hydrate.
  • Dusting tops of brownies, lemon bars, or stollen — sift through a fine mesh after blending and the visual finish is indistinguishable from commercial 10X.
  • Buttercream frosting for layer cakes when made in a high-powered blender (Vitamix, Ninja) that reaches the 200-mesh fineness store-bought hits.

When to use caution

  • Italian and Swiss meringue buttercreams — any grit above 50 microns telegraphs through the silky emulsion and leaves a sandy mouthfeel on the tongue.
  • No-cook fondant or marshmallow rollouts that depend on instant dissolution; underblended sugar weeps and the sheet tears when you drape it over a tiered cake.
  • Snow-white macaron shells — granulated sugar carries trace molasses that yellows the meringue, and any starch over 3% by weight dulls the gloss.

Recipe Notes

Cream Cheese Frosting for Carrot Cake

Blend 4 cups granulated sugar with 4 tablespoons cornstarch in two batches for a full minute each. Let the powder settle for 10 minutes before opening the lid — airborne sugar dust irritates lungs. Beat into 8 ounces cream cheese and 1/2 cup butter as you would store-bought.

Lemon Bar Topping

For a dusting that survives the 30-minute fridge rest without dissolving, blend the sugar-cornstarch mix until extra fine, then sift twice. Apply the powdered sugar after the bars have cooled to 70F or below; warmer surfaces wick moisture and turn the dusting translucent within an hour.

Snickerdoodle Glaze

Homemade powdered sugar performs beautifully here because the glaze is whisked with 2 tablespoons milk and a teaspoon of vanilla, giving any residual sugar crystals time to dissolve. Aim for a 4:1 sugar-to-liquid ratio by volume — the extra cornstarch firms the glaze enough to set matte instead of glossy.

Best by Recipe Type

Common Baking Questions

These are common questions bakers ask. Each links to a recipe-specific substitute page with direct ratios and adjustment notes.

What can I use instead of powdered sugar for cake?

Start with Blended Granulated Sugar (Blend 1 cup granulated sugar + 1 tbsp cornstarch until powdery). Homemade powdered sugar works perfectly. Blend for 30-60 seconds.

See recipe-specific answer →

Can I make cookies without powdered sugar?

Yes. Start with Blended Granulated Sugar at Blend 1 cup granulated sugar + 1 tbsp cornstarch until powdery. Homemade powdered sugar works perfectly. Blend for 30-60 seconds.

See recipe-specific answer →

Best powdered sugar substitute for muffins?

Blended Granulated Sugar, used at Blend 1 cup granulated sugar + 1 tbsp cornstarch until powdery. Homemade powdered sugar works perfectly. Blend for 30-60 seconds.

See recipe-specific answer →

How do I substitute powdered sugar in pancake and waffle batter?

Use Blended Granulated Sugar at Blend 1 cup granulated sugar + 1 tbsp cornstarch until powdery — Homemade powdered sugar works perfectly. Blend for 30-60 seconds. Mix as the original recipe directs, then taste and adjust liquid or bake time in small steps after a test batch.

See recipe-specific answer →

Will blended granulated sugar work as a powdered sugar substitute in yeasted dough?

Yes, at Blend 1 cup granulated sugar + 1 tbsp cornstarch until powdery. Homemade powdered sugar works perfectly. Blend for 30-60 seconds. Bake-test before scaling up.

See recipe-specific answer →

Worked Example

If a recipe calls for 1 cup powdered sugar (120g), start with your selected substitute's ratio, then run a small test bake before scaling.

Expect up to 8% variation in cup-based measurements due to brand and handling differences. Weight-first measuring is more reliable for structure-sensitive recipes.

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Pitfalls to Avoid

  • Homemade powdered sugar works perfectly. Blend for 30-60 seconds.
  • Start with the listed ratio for powdered sugar and test a half batch before scaling.
  • Adjust liquid and bake time gradually after the first test bake.
  • Prioritize substitutions marked excellent/good for structure-sensitive recipes.
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