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Best Cornstarch Substitute in Biscuits

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

Quick Answer

The best substitute for Cornstarch in Biscuits is Potato Starch because it provides a similar fine texture and thickening ability without altering the biscuit's crumb or flavor.

Top 5 Cornstarch Substitutes for Biscuits

Substitute Ratio
โญ Potato Starch (Best) 1:1 (1 tablespoon potato starch per 1 tablespoon cornstarch)
Rice Flour 1:1 (1 tablespoon rice flour per 1 tablespoon cornstarch)
Wheat Flour (Cake Flour preferred) 2 tablespoons wheat flour per 1 tablespoon cornstarch
Arrowroot Powder 1:1 (1 tablespoon arrowroot powder per 1 tablespoon cornstarch)
Tapioca Starch 1:1 (1 tablespoon tapioca starch per 1 tablespoon cornstarch)

Detailed Guide: Each Cornstarch Substitute in Biscuits

Potato Starch (Best Option)

1:1 (1 tablespoon potato starch per 1 tablespoon cornstarch)
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Quick tip: Maintains biscuit tenderness and lightness without adding flavor; ideal for gluten-free baking.

Potato starch has similar thickening properties and a fine texture that mimics cornstarch's role in biscuits, helping to tenderize the dough by interrupting gluten formation. This results in a soft, flaky crumb.

For best results, use potato starch in the same quantity as cornstarch and mix it thoroughly with the flour to ensure even distribution. Avoid overmixing the dough to maintain biscuit flakiness.

Compared to cornstarch, potato starch yields a biscuit with comparable tenderness and crumb structure, making it the most seamless substitute.

Rice Flour

1:1 (1 tablespoon rice flour per 1 tablespoon cornstarch)
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: Adds a slightly grainier texture but keeps biscuits light; best when sifted well with other flours.

Rice flour is a fine, gluten-free flour that can mimic cornstarch's tenderizing effect by diluting gluten formation and absorbing moisture. It helps create a lighter biscuit crumb, though it may add a subtle graininess.

To optimize texture, sift rice flour with the other dry ingredients and avoid excessive mixing to prevent toughness.

Biscuits made with rice flour instead of cornstarch will be slightly less smooth but still tender and flaky.

Wheat Flour (Cake Flour preferred)

2 tablespoons wheat flour per 1 tablespoon cornstarch
Vegan Dairy-Free Fat-Free Nut-Free
Quick tip: Increases gluten content, potentially making biscuits denser and less tender; use sparingly.

Wheat flour contains gluten which provides structure but can toughen biscuits if overused. Using cake flour, which has lower protein, reduces this effect but still does not replicate cornstarch's tenderizing role perfectly.

When substituting, use double the amount of wheat flour to cornstarch to achieve similar thickening, but be cautious not to overwork the dough.

Biscuits will be slightly heavier and less flaky compared to those made with cornstarch.

Arrowroot Powder

1:1 (1 tablespoon arrowroot powder per 1 tablespoon cornstarch)
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: Can cause a gummy texture if overused; best limited to small amounts in biscuit dough.

Arrowroot powder is a starch that thickens and tenderizes but retains more moisture, which can lead to a gummy or sticky biscuit crumb if used excessively.

Use the same amount as cornstarch but consider reducing liquid slightly to compensate. Mix thoroughly but avoid overmixing.

Biscuits may be softer but risk losing the desired flaky texture.

Tapioca Starch

1:1 (1 tablespoon tapioca starch per 1 tablespoon cornstarch)
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: May create a chewy or sticky biscuit texture; not ideal for traditional biscuit crumb.

Tapioca starch is a strong thickener but tends to impart chewiness and stickiness due to its high amylopectin content, which can interfere with the light, flaky structure of biscuits.

Use cautiously and consider blending with other flours to mitigate texture changes.

Final biscuits will be less tender and may have a slightly gummy mouthfeel compared to those made with cornstarch.

Vegan Cornstarch Substitutes for Biscuits

Full Vegan guide โ†’
Potato Starch
Ratio: 1:1 (1 tablespoon potato starch per 1 tablespoon cornstarch)

Maintains biscuit tenderness and lightness without adding flavor; ideal for gluten-free baking.

Rice Flour
Ratio: 1:1 (1 tablespoon rice flour per 1 tablespoon cornstarch)

Adds a slightly grainier texture but keeps biscuits light; best when sifted well with other flours.

Wheat Flour (Cake Flour preferred)
Ratio: 2 tablespoons wheat flour per 1 tablespoon cornstarch

Increases gluten content, potentially making biscuits denser and less tender; use sparingly.

Arrowroot Powder
Ratio: 1:1 (1 tablespoon arrowroot powder per 1 tablespoon cornstarch)

Can cause a gummy texture if overused; best limited to small amounts in biscuit dough.

Tapioca Starch
Ratio: 1:1 (1 tablespoon tapioca starch per 1 tablespoon cornstarch)

May create a chewy or sticky biscuit texture; not ideal for traditional biscuit crumb.

Gluten-Free Cornstarch Substitutes for Biscuits

Full Gluten-Free guide โ†’
Potato Starch
Ratio: 1:1 (1 tablespoon potato starch per 1 tablespoon cornstarch)

Maintains biscuit tenderness and lightness without adding flavor; ideal for gluten-free baking.

Rice Flour
Ratio: 1:1 (1 tablespoon rice flour per 1 tablespoon cornstarch)

Adds a slightly grainier texture but keeps biscuits light; best when sifted well with other flours.

Arrowroot Powder
Ratio: 1:1 (1 tablespoon arrowroot powder per 1 tablespoon cornstarch)

Can cause a gummy texture if overused; best limited to small amounts in biscuit dough.

Tapioca Starch
Ratio: 1:1 (1 tablespoon tapioca starch per 1 tablespoon cornstarch)

May create a chewy or sticky biscuit texture; not ideal for traditional biscuit crumb.

Dairy-Free Cornstarch Substitutes for Biscuits

Full Dairy-Free guide โ†’
Potato Starch
Ratio: 1:1 (1 tablespoon potato starch per 1 tablespoon cornstarch)

Maintains biscuit tenderness and lightness without adding flavor; ideal for gluten-free baking.

Rice Flour
Ratio: 1:1 (1 tablespoon rice flour per 1 tablespoon cornstarch)

Adds a slightly grainier texture but keeps biscuits light; best when sifted well with other flours.

Wheat Flour (Cake Flour preferred)
Ratio: 2 tablespoons wheat flour per 1 tablespoon cornstarch

Increases gluten content, potentially making biscuits denser and less tender; use sparingly.

Arrowroot Powder
Ratio: 1:1 (1 tablespoon arrowroot powder per 1 tablespoon cornstarch)

Can cause a gummy texture if overused; best limited to small amounts in biscuit dough.

Tapioca Starch
Ratio: 1:1 (1 tablespoon tapioca starch per 1 tablespoon cornstarch)

May create a chewy or sticky biscuit texture; not ideal for traditional biscuit crumb.

โŒ What NOT to Use as a Cornstarch Substitute in Biscuits

All-Purpose Flour

All-purpose flour adds gluten and a heavier texture, which can make biscuits denser and less tender compared to cornstarch's lightening effect.

Arrowroot Powder

Arrowroot can cause biscuits to become gummy or overly moist when used in baking, negatively impacting the desired flaky and tender crumb.

Tapioca Starch

Tapioca starch tends to create a chewy texture and can cause biscuits to become sticky, which is undesirable in achieving the classic biscuit flakiness.

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