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Best Cornstarch Substitute in Pie Crust

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

Quick Answer

The best substitute for Cornstarch in Pie Crust is Arrowroot Powder because it provides similar thickening properties without altering the flavor or texture, ensuring a tender and flaky crust.

Top 5 Cornstarch Substitutes for Pie Crust

Substitute Ratio
Arrowroot Powder (Best) 1:1 (use equal amount as cornstarch)
Rice Flour 1:1 (equal amount as cornstarch)
Potato Flour 1:1 (equal amount as cornstarch)
Wheat Starch 1:1 (equal amount as cornstarch)
Ground Flaxseed (as binder, not thickener) 1 tablespoon ground flaxseed mixed with 3 tablespoons water per 1 tablespoon cornstarch

Detailed Guide: Each Cornstarch Substitute in Pie Crust

Arrowroot Powder (Best Option)

1:1 (use equal amount as cornstarch)
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: Maintains a light, tender crust without adding flavor; excellent for gluten-free and vegan diets.

Arrowroot powder is a starch extracted from tropical plants and behaves very similarly to cornstarch in baking. It gelatinizes at a lower temperature and creates a clear, glossy finish, which helps maintain the pie crust’s delicate texture without cloudiness or heaviness.

When substituting, use the same amount as cornstarch and avoid overmixing the dough to prevent excessive gelatinization that could make the crust gummy. It’s best to incorporate arrowroot powder evenly to ensure consistent thickening.

Compared to cornstarch, arrowroot yields a slightly more tender and crisp crust, with a neutral flavor profile that does not interfere with the pie’s taste.

Rice Flour

1:1 (equal amount as cornstarch)
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: Adds slight graininess but generally preserves crust tenderness; good for gluten-free baking.

Rice flour is a fine, gluten-free flour that can mimic some thickening properties of cornstarch. It absorbs moisture and helps create structure in the dough without developing gluten, which is important for a tender crust.

Use the same amount as cornstarch but be mindful that rice flour can sometimes impart a slightly gritty texture if not well incorporated. Sifting and thorough mixing help minimize this effect.

The final crust may be a bit denser and less flaky than with cornstarch, but it remains tender and suitable for gluten-free diets.

Potato Flour

1:1 (equal amount as cornstarch)
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: Can make crust more moist and slightly heavier; use sparingly to avoid sogginess.

Potato flour is made from whole potatoes and contains more fiber and moisture than potato starch. It thickens but also retains water, which can affect the dough’s texture by making it softer and less crisp.

When substituting, use the same amount as cornstarch but consider reducing other liquids slightly to compensate. Avoid overworking the dough to prevent a gummy texture.

The crust will be less flaky and more tender, with a slight heaviness compared to cornstarch-based doughs.

Wheat Starch

1:1 (equal amount as cornstarch)
Vegan Dairy-Free Fat-Free Nut-Free
Quick tip: Provides good thickening but contains gluten, which may toughen the crust; not suitable for gluten-free diets.

Wheat starch is a refined starch extracted from wheat and acts similarly to cornstarch in thickening. However, it contains residual gluten, which can develop elasticity and toughness in pie crust dough.

Use the same amount as cornstarch but be cautious with mixing to avoid over-developing gluten. This substitute is best if gluten is not a concern.

The crust may be slightly chewier and less flaky than with cornstarch, but it still provides adequate thickening and structure.

Ground Flaxseed (as binder, not thickener)

1 tablespoon ground flaxseed mixed with 3 tablespoons water per 1 tablespoon cornstarch
Vegan Gluten-Free Dairy-Free Fat-Free Nut-Free
Quick tip: Adds slight nutty flavor and density; not a direct thickener but can help bind dough components.

Ground flaxseed forms a gel-like consistency when mixed with water, which can act as a binder in dough. While it does not thicken like cornstarch, it can help hold the pie crust together and add moisture retention.

Use this substitute only if the goal is to improve dough cohesion rather than replace thickening. It may alter the flavor and texture, making the crust denser and slightly nutty.

The final crust will be less flaky and more rustic, with a noticeable change in mouthfeel compared to cornstarch.

Vegan Cornstarch Substitutes for Pie Crust

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

Maintains a light, tender crust without adding flavor; excellent for gluten-free and vegan diets.

Rice Flour
Ratio: 1:1 (equal amount as cornstarch)

Adds slight graininess but generally preserves crust tenderness; good for gluten-free baking.

Potato Flour
Ratio: 1:1 (equal amount as cornstarch)

Can make crust more moist and slightly heavier; use sparingly to avoid sogginess.

Wheat Starch
Ratio: 1:1 (equal amount as cornstarch)

Provides good thickening but contains gluten, which may toughen the crust; not suitable for gluten-free diets.

Ground Flaxseed (as binder, not thickener)
Ratio: 1 tablespoon ground flaxseed mixed with 3 tablespoons water per 1 tablespoon cornstarch

Adds slight nutty flavor and density; not a direct thickener but can help bind dough components.

Gluten-Free Cornstarch Substitutes for Pie Crust

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

Maintains a light, tender crust without adding flavor; excellent for gluten-free and vegan diets.

Rice Flour
Ratio: 1:1 (equal amount as cornstarch)

Adds slight graininess but generally preserves crust tenderness; good for gluten-free baking.

Potato Flour
Ratio: 1:1 (equal amount as cornstarch)

Can make crust more moist and slightly heavier; use sparingly to avoid sogginess.

Ground Flaxseed (as binder, not thickener)
Ratio: 1 tablespoon ground flaxseed mixed with 3 tablespoons water per 1 tablespoon cornstarch

Adds slight nutty flavor and density; not a direct thickener but can help bind dough components.

Dairy-Free Cornstarch Substitutes for Pie Crust

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

Maintains a light, tender crust without adding flavor; excellent for gluten-free and vegan diets.

Rice Flour
Ratio: 1:1 (equal amount as cornstarch)

Adds slight graininess but generally preserves crust tenderness; good for gluten-free baking.

Potato Flour
Ratio: 1:1 (equal amount as cornstarch)

Can make crust more moist and slightly heavier; use sparingly to avoid sogginess.

Wheat Starch
Ratio: 1:1 (equal amount as cornstarch)

Provides good thickening but contains gluten, which may toughen the crust; not suitable for gluten-free diets.

Ground Flaxseed (as binder, not thickener)
Ratio: 1 tablespoon ground flaxseed mixed with 3 tablespoons water per 1 tablespoon cornstarch

Adds slight nutty flavor and density; not a direct thickener but can help bind dough components.

❌ What NOT to Use as a Cornstarch Substitute in Pie Crust

All-Purpose Flour

All-purpose flour adds gluten, which can toughen the pie crust and interfere with the desired flaky texture. Additionally, it does not thicken as efficiently as cornstarch, potentially resulting in a less stable filling.

Tapioca Starch

While tapioca starch thickens well, it can create a slightly gummy or overly elastic texture in pie crust dough, which compromises the delicate flakiness and can make the crust chewy rather than crisp.

Potato Starch

Potato starch tends to retain more moisture and can cause the crust to become soggy or overly soft, which is undesirable in pie crusts that require a crisp, dry texture.

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