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Best Cornstarch Substitute in Sugar Cookies

5 tested options with exact ratios, science-backed explanations, and tips for success.

Quick Answer

The best substitute for Cornstarch in Sugar Cookies is Arrowroot Powder because it provides similar thickening and tenderizing properties without altering the flavor or texture, maintaining the cookie's delicate crumb.

Top 5 Cornstarch Substitutes for Sugar Cookies

Substitute Ratio
Arrowroot Powder (Best) 1:1 (use equal amount as cornstarch)
Rice Flour Use 1 tablespoon rice flour for every 1 tablespoon cornstarch
Potato Flour Use 1 tablespoon potato flour for every 1 tablespoon cornstarch
Wheat Starch Use 1 tablespoon wheat starch for every 1 tablespoon cornstarch
Tapioca Starch Use 1 tablespoon tapioca starch for every 1 tablespoon cornstarch

Detailed Guide: Each Cornstarch Substitute in Sugar Cookies

Arrowroot Powder (Best Option)

1:1 (use equal amount as cornstarch)
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Quick tip: Maintains a tender crumb and light texture similar to cornstarch without imparting any flavor.

Arrowroot powder is a starch extracted from tropical plants and acts as a neutral thickener and tenderizer, similar to cornstarch. It helps inhibit gluten formation by coating flour proteins, resulting in a soft, tender sugar cookie.

To use arrowroot powder successfully, measure it exactly as you would cornstarch. It dissolves well and does not require pre-cooking, making it easy to incorporate into cookie dough. Avoid overheating as it can break down under prolonged heat.

Compared to cornstarch, arrowroot yields a similarly tender and slightly lighter texture, preserving the cookie’s delicate crumb and preventing excessive spreading.

Rice Flour

Use 1 tablespoon rice flour for every 1 tablespoon cornstarch
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Quick tip: Adds a mild graininess but still helps tenderize and reduce gluten development in the dough.

Rice flour is a fine, gluten-free flour that can mimic some of cornstarch’s tenderizing effects by diluting gluten proteins and absorbing moisture. It is less refined than cornstarch but still light enough to keep sugar cookies tender.

When substituting, sift rice flour to avoid clumps and mix thoroughly into the dough. It may slightly increase the cookie’s density, so avoid overusing.

The final cookie will be tender but with a slightly more crumbly texture and subtle graininess compared to the smoothness cornstarch provides.

Potato Flour

Use 1 tablespoon potato flour for every 1 tablespoon cornstarch
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Quick tip: Can increase moisture retention but may cause a softer, less crisp cookie texture.

Potato flour is made from whole potatoes and contains starches that help retain moisture and tenderize baked goods. It can replace cornstarch’s thickening role but tends to hold more water, which can soften sugar cookies.

Use sparingly and combine with other flours to avoid overly soft or gummy cookies. Mix well to ensure even distribution.

Cookies made with potato flour will be softer and less crisp, with a slightly denser bite than those made with cornstarch.

Wheat Starch

Use 1 tablespoon wheat starch for every 1 tablespoon cornstarch
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Quick tip: Provides similar thickening but contains gluten, which can slightly toughen cookies.

Wheat starch is a refined starch extracted from wheat and acts similarly to cornstarch in thickening and tenderizing. However, unlike cornstarch, it contains trace gluten which can develop some elasticity in dough.

Use only if gluten content is not a concern. It should be mixed thoroughly to avoid clumping.

Sugar cookies with wheat starch may be slightly chewier and less tender than those with cornstarch, but still acceptable in texture.

Tapioca Starch

Use 1 tablespoon tapioca starch for every 1 tablespoon cornstarch
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: May cause cookies to spread more and develop a chewier texture.

Tapioca starch is a starch derived from cassava root that thickens and tenderizes dough. However, it has a higher gelatinization temperature and can increase moisture retention, leading to more spreading and chewiness.

To minimize spreading, reduce other liquids slightly or chill dough before baking.

Cookies will be softer and chewier with a less crisp edge compared to cornstarch-based cookies.

Vegan Cornstarch Substitutes for Sugar Cookies

Full Vegan guide →
Arrowroot Powder
Ratio: 1:1 (use equal amount as cornstarch)

Maintains a tender crumb and light texture similar to cornstarch without imparting any flavor.

Rice Flour
Ratio: Use 1 tablespoon rice flour for every 1 tablespoon cornstarch

Adds a mild graininess but still helps tenderize and reduce gluten development in the dough.

Potato Flour
Ratio: Use 1 tablespoon potato flour for every 1 tablespoon cornstarch

Can increase moisture retention but may cause a softer, less crisp cookie texture.

Wheat Starch
Ratio: Use 1 tablespoon wheat starch for every 1 tablespoon cornstarch

Provides similar thickening but contains gluten, which can slightly toughen cookies.

Tapioca Starch
Ratio: Use 1 tablespoon tapioca starch for every 1 tablespoon cornstarch

May cause cookies to spread more and develop a chewier texture.

Gluten-Free Cornstarch Substitutes for Sugar Cookies

Full Gluten-Free guide →
Arrowroot Powder
Ratio: 1:1 (use equal amount as cornstarch)

Maintains a tender crumb and light texture similar to cornstarch without imparting any flavor.

Rice Flour
Ratio: Use 1 tablespoon rice flour for every 1 tablespoon cornstarch

Adds a mild graininess but still helps tenderize and reduce gluten development in the dough.

Potato Flour
Ratio: Use 1 tablespoon potato flour for every 1 tablespoon cornstarch

Can increase moisture retention but may cause a softer, less crisp cookie texture.

Tapioca Starch
Ratio: Use 1 tablespoon tapioca starch for every 1 tablespoon cornstarch

May cause cookies to spread more and develop a chewier texture.

Dairy-Free Cornstarch Substitutes for Sugar Cookies

Full Dairy-Free guide →
Arrowroot Powder
Ratio: 1:1 (use equal amount as cornstarch)

Maintains a tender crumb and light texture similar to cornstarch without imparting any flavor.

Rice Flour
Ratio: Use 1 tablespoon rice flour for every 1 tablespoon cornstarch

Adds a mild graininess but still helps tenderize and reduce gluten development in the dough.

Potato Flour
Ratio: Use 1 tablespoon potato flour for every 1 tablespoon cornstarch

Can increase moisture retention but may cause a softer, less crisp cookie texture.

Wheat Starch
Ratio: Use 1 tablespoon wheat starch for every 1 tablespoon cornstarch

Provides similar thickening but contains gluten, which can slightly toughen cookies.

Tapioca Starch
Ratio: Use 1 tablespoon tapioca starch for every 1 tablespoon cornstarch

May cause cookies to spread more and develop a chewier texture.

❌ What NOT to Use as a Cornstarch Substitute in Sugar Cookies

All-Purpose Flour

While it can thicken, all-purpose flour adds gluten which changes the texture of sugar cookies, making them denser and less tender, which is undesirable in a delicate cookie.

Potato Starch

Potato starch can create a gummy or overly moist texture in sugar cookies, disrupting the crisp yet tender balance that cornstarch helps achieve.

Tapioca Starch

Tapioca starch tends to create a chewier texture and can cause sugar cookies to spread more, altering their intended shape and mouthfeel.

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