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Best Cornstarch Substitute in Pasta

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

Quick Answer

The best substitute for Cornstarch in Pasta is Tapioca Starch because it provides a similar thickening power and glossy finish without altering the flavor or texture significantly.

Top 5 Cornstarch Substitutes for Pasta

Substitute Ratio
Tapioca Starch (Best) 1:1 (1 tablespoon tapioca starch per 1 tablespoon cornstarch)
Rice Flour 1.25:1 (1 1/4 tablespoons rice flour per 1 tablespoon cornstarch)
Arrowroot Powder 1:1 (1 tablespoon arrowroot powder per 1 tablespoon cornstarch)
Wheat Starch 1:1 (1 tablespoon wheat starch per 1 tablespoon cornstarch)
Ground Flaxseed (as binder in dough only) 1 tablespoon ground flaxseed mixed with 3 tablespoons water per 1 tablespoon cornstarch

Detailed Guide: Each Cornstarch Substitute in Pasta

Tapioca Starch (Best Option)

1:1 (1 tablespoon tapioca starch per 1 tablespoon cornstarch)
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Quick tip: Maintains a smooth, glossy texture in pasta sauces and does not affect flavor.

Tapioca starch is a fine powder extracted from cassava root, which thickens sauces similarly to cornstarch by gelatinizing starch molecules when heated. It creates a clear, glossy finish ideal for pasta sauces.

To ensure success, mix tapioca starch with cold water before adding to hot sauce to prevent clumping. Avoid prolonged boiling as it may thin out after extended heat exposure.

Compared to cornstarch, tapioca starch yields a slightly chewier texture in dough if used directly, but in sauces it is nearly indistinguishable and provides excellent thickening without cloudiness.

Rice Flour

1.25:1 (1 1/4 tablespoons rice flour per 1 tablespoon cornstarch)
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Quick tip: May produce a slightly grainier texture in sauces but works well in pasta dough for thickening and binding.

Rice flour is a finely milled flour from white rice that can thicken sauces by absorbing liquid and swelling when heated. It is less potent than cornstarch, so a slightly higher amount is needed.

When using rice flour, whisk it into cold water before adding to hot pasta sauce to avoid lumps. It can impart a mild graininess if not fully dissolved.

In pasta dough, rice flour can help improve structure but may make the dough slightly less elastic compared to cornstarch.

Arrowroot Powder

1:1 (1 tablespoon arrowroot powder per 1 tablespoon cornstarch)
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Quick tip: Creates a clear, glossy sauce but can become slimy if overheated or combined with acidic ingredients.

Arrowroot powder is a starch extracted from tropical plants that thickens quickly at lower temperatures and produces a clear, shiny sauce. It works well in pasta sauces that are gently heated.

To avoid sliminess, add arrowroot near the end of cooking and avoid boiling. It is best used in neutral or mildly acidic pasta sauces.

Compared to cornstarch, arrowroot gives a lighter, more translucent finish but is less stable under prolonged heat.

Wheat Starch

1:1 (1 tablespoon wheat starch per 1 tablespoon cornstarch)
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Quick tip: Provides good thickening but contains gluten, which may affect pasta texture and is unsuitable for gluten-free diets.

Wheat starch is a refined starch derived from wheat, capable of thickening sauces similarly to cornstarch. It gelatinizes upon heating, creating a smooth texture.

When using wheat starch, ensure even dispersion in cold water before adding to hot pasta sauce to prevent lumps. It is not suitable for those avoiding gluten.

Compared to cornstarch, wheat starch may impart a slightly denser texture in pasta dough and is not ideal for gluten-sensitive individuals.

Ground Flaxseed (as binder in dough only)

1 tablespoon ground flaxseed mixed with 3 tablespoons water per 1 tablespoon cornstarch
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Quick tip: Adds binding properties in pasta dough but will alter texture and flavor; not suitable for thickening sauces.

Ground flaxseed mixed with water forms a gel-like binder that can replace cornstarch’s binding function in pasta dough. It helps hold dough together but does not thicken sauces.

Use flaxseed gel sparingly to avoid a gritty texture and nutty flavor that may alter the pasta’s taste. It is best reserved for dough rather than sauces.

Compared to cornstarch, flaxseed changes the dough’s elasticity and can result in a denser, more fibrous pasta.

Vegan Cornstarch Substitutes for Pasta

Full Vegan guide →
Tapioca Starch
Ratio: 1:1 (1 tablespoon tapioca starch per 1 tablespoon cornstarch)

Maintains a smooth, glossy texture in pasta sauces and does not affect flavor.

Rice Flour
Ratio: 1.25:1 (1 1/4 tablespoons rice flour per 1 tablespoon cornstarch)

May produce a slightly grainier texture in sauces but works well in pasta dough for thickening and binding.

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

Creates a clear, glossy sauce but can become slimy if overheated or combined with acidic ingredients.

Wheat Starch
Ratio: 1:1 (1 tablespoon wheat starch per 1 tablespoon cornstarch)

Provides good thickening but contains gluten, which may affect pasta texture and is unsuitable for gluten-free diets.

Ground Flaxseed (as binder in dough only)
Ratio: 1 tablespoon ground flaxseed mixed with 3 tablespoons water per 1 tablespoon cornstarch

Adds binding properties in pasta dough but will alter texture and flavor; not suitable for thickening sauces.

Gluten-Free Cornstarch Substitutes for Pasta

Full Gluten-Free guide →
Tapioca Starch
Ratio: 1:1 (1 tablespoon tapioca starch per 1 tablespoon cornstarch)

Maintains a smooth, glossy texture in pasta sauces and does not affect flavor.

Rice Flour
Ratio: 1.25:1 (1 1/4 tablespoons rice flour per 1 tablespoon cornstarch)

May produce a slightly grainier texture in sauces but works well in pasta dough for thickening and binding.

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

Creates a clear, glossy sauce but can become slimy if overheated or combined with acidic ingredients.

Ground Flaxseed (as binder in dough only)
Ratio: 1 tablespoon ground flaxseed mixed with 3 tablespoons water per 1 tablespoon cornstarch

Adds binding properties in pasta dough but will alter texture and flavor; not suitable for thickening sauces.

Dairy-Free Cornstarch Substitutes for Pasta

Full Dairy-Free guide →
Tapioca Starch
Ratio: 1:1 (1 tablespoon tapioca starch per 1 tablespoon cornstarch)

Maintains a smooth, glossy texture in pasta sauces and does not affect flavor.

Rice Flour
Ratio: 1.25:1 (1 1/4 tablespoons rice flour per 1 tablespoon cornstarch)

May produce a slightly grainier texture in sauces but works well in pasta dough for thickening and binding.

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

Creates a clear, glossy sauce but can become slimy if overheated or combined with acidic ingredients.

Wheat Starch
Ratio: 1:1 (1 tablespoon wheat starch per 1 tablespoon cornstarch)

Provides good thickening but contains gluten, which may affect pasta texture and is unsuitable for gluten-free diets.

Ground Flaxseed (as binder in dough only)
Ratio: 1 tablespoon ground flaxseed mixed with 3 tablespoons water per 1 tablespoon cornstarch

Adds binding properties in pasta dough but will alter texture and flavor; not suitable for thickening sauces.

❌ What NOT to Use as a Cornstarch Substitute in Pasta

All-Purpose Flour

All-purpose flour contains gluten, which can make pasta dough tougher and denser, negatively affecting the delicate texture of fresh pasta. Additionally, it does not provide the same clear thickening or gloss that cornstarch offers in sauces accompanying pasta.

Potato Starch

Potato starch tends to break down and become watery when exposed to prolonged heat, which is common in pasta cooking and sauce preparation. This instability can lead to a less consistent sauce texture and a gummy mouthfeel.

Arrowroot Powder

Arrowroot can create a slimy or overly gelatinous texture when combined with acidic pasta sauces, which can be undesirable. It also loses thickening power if overheated or cooked too long, common in pasta dishes.

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