The 11 Best Substitutes for Cornstarch

Running out of cornstarch is one of those kitchen moments that feels dramatic for no reasonlike a cliffhanger,
but the villain is your pantry. The good news: cornstarch is not the only thickener in town. The better
news: the right substitute can actually improve your sauce, gravy, pie filling, or crispy coating… as long as you
don’t treat every powder like it’s the same powder in a different outfit.

Below are the 11 best substitutes for cornstarch, with simple swap ratios, best uses, and the little “gotchas”
that separate silky success from gluey regret.

What Cornstarch Does (and Why It’s a Little High-Maintenance)

Cornstarch thickens by swelling when heated with liquid, turning soups, sauces, and fruit fillings from “watery”
to “restaurant-level glossy.” It also helps create a light, crisp coating in frying and can tenderize certain
baked goods.

But cornstarch has quirks. It’s happiest when mixed with cold liquid first (a slurry) so it won’t
clump, and it can lose thickening power in very acidic mixtures or behave oddly after freezing and thawing.
Translation: cornstarch is fantasticuntil it decides it’s not.

Quick Rules for Picking the Right Substitute

• Want a shiny, clear sauce? Choose a starch like arrowroot, tapioca starch, or potato starch.
• Want classic gravy flavor? Flour-based thickeners (especially cooked into a roux) taste “cozier.”
• Thickening something you’ll freeze? Tapioca-based thickeners or certain stabilizers often hold up better.
• Need gluten-free? Many starches (potato, tapioca, rice) and gums are naturally gluten-free.
• Hate lumps? Slurry first, whisk hard, and add gradually. Your sauce deserves consent.

The 11 Best Substitutes for Cornstarch

1) All-Purpose Flour (The Classic, Cozy Thickener)

Flour is the most common cornstarch substitute because it’s everywhere and it works. The trade-off is appearance:
flour thickens with a more opaque, “homey” look (great for gravy, less ideal for glossy fruit glazes).

Swap ratio: Use about 2 tablespoons flour for every 1 tablespoon cornstarch.
For best flavor, let it simmer a few minutes to cook out any raw flour taste.

Best for: gravies, stews, chowders, creamy soups, casseroles.

Pro tip: If you have time, cook flour with fat first (a roux). It thickens smoothly and tastes more “finished.”

2) Instant Flour (Pre-Cooked Flour That Plays Nice)

Instant flour is flour that’s been pre-cooked and finely milled, so it disperses more easily and clumps less than
regular flour. It’s basically “flour with good manners.”

Swap ratio: Start with a 1:1 swap, then adjust. Because recipes vary, add a little,
simmer, and reassess before going full “powder avalanche.”

Best for: quick pan sauces, gravy when you’re in a hurry, weeknight soups.

Pro tip: Sprinkle gradually while whisking, then simmer to reach full thickness.

3) Arrowroot Powder (Clear, Glossy, and Fast)

Arrowroot is a starch that thickens beautifully and stays cleargreat when you want a shiny sauce or a fruit filling
that looks like it belongs in a bakery display case. It thickens quickly, so it’s not the one you ignore on the stove.

Swap ratio: Usually 1:1 (same amount as cornstarch).

Best for: fruit sauces, stir-fry sauces, glossy pan sauces, clear gravies.

Watch out: In some dairy-heavy sauces, arrowroot can act a little weird (think slick or slightly stringy),
so test a small batch if you can.

4) Tapioca Starch (Great Thickening Power, Gentle Heat Needed)

Tapioca starch thickens well and can create a lovely sheen. It’s popular in fruit fillings and desserts, but it can turn
gummy or slightly stringy if you boil it aggressively for too long. So: simmer, don’t punish.

Swap ratio: Commonly 2 tablespoons tapioca starch for 1 tablespoon cornstarch.

Best for: pie fillings, sweet sauces, puddings, frying coatings (for extra crispness).

Pro tip: Add near the end of cooking and avoid prolonged boiling to keep the texture smooth.

5) Quick-Cooking Tapioca (The Pie-Filling Specialist)

This is a tapioca product designed to thicken fruit fillings in the oven. It’s especially helpful for pies because it can
thicken juices while staying relatively clear. If you’ve ever sliced into a fruit pie and watched it immediately become
fruit soup, this one’s your ally.

Swap approach: Use it when a recipe calls for a starch thickener in baked fruit fillings. Mix it with sugar
and fruit, let it sit briefly so it hydrates, then bake until you see bubbling in the center (that bubbling matters for activation).

Best for: berry pies, peach pies, cobbler-style fruit desserts.

Pro tip: If the granules bother you, crush or grind them first for a smoother texture.

6) Potato Starch (Strong Thickening, Neutral Flavor)

Potato starch is powerful and neutral, making it a strong cornstarch substitute for sauces and soups. It can clump if dumped in dry,
so treat it like cornstarch: slurry first, then whisk in.

Swap ratio: Often 1:1.

Best for: gravies, soups, sauces, gluten-free frying coatings.

Watch out: Like many starches, too much heat for too long can tighten the texture. Add, simmer briefly, stop.

7) Rice Flour (Smooth Thickening with a Light Touch)

Rice flour can thicken sauces and is a classic gluten-free option. It won’t always give the same “snap” as cornstarch,
but it’s dependableespecially when you want mild flavor and a steady simmer.

Swap ratio: Start with 2 tablespoons rice flour per 1 tablespoon cornstarch. Some cooks go up to
3 tablespoons depending on the recipe and how thick you want things.

Best for: sauces, soups, baking, and light frying batters.

Pro tip: Whisk it into a cold slurry first to avoid tiny flour “freckles.”

8) Sweet Rice Flour (Glutinous Rice Flour for Silky Results)

Sweet rice flour (also called glutinous rice flour) is different from regular rice flour. It can thicken with a smooth,
slightly elastic finish that works beautifully in certain sauces and dessertsespecially in Asian-style cooking.
(“Glutinous” refers to texture, not gluten.)

Swap ratio: Often works as a 1:1 substitute for cornstarch.

Best for: glossy sauces, dessert fillings, and recipes where a slightly stretchy silkiness is welcome.

Pro tip: Use a slurry and add gradually; it thickens quickly once heated.

9) Xanthan Gum (Tiny Amount, Big Power)

Xanthan gum is a modern thickener and stabilizer that works in hot or cold mixtures. It’s popular in gluten-free cooking
because it can add body without needing a long simmer. The main rule: a little goes a long way.

Swap approach: For sauces, start very smallthink about 1/4 teaspoon per cup of liquid,
blend or whisk thoroughly, then pause before adding more. Overdoing it can make things feel slimy or gummy.

Best for: salad dressings, smoothies, sauces that need stability, gluten-free cooking.

Pro tip: Sprinkle slowly while whisking, or blend briefly to prevent clumps.

10) Guar Gum (Great for Cold Thickening and Creamy Textures)

Guar gum thickens efficiently, especially in colder mixtures. It’s used to stabilize creamy foods, help prevent separation,
and create that “smooth and spoonable” texture without needing much heat.

Swap approach: Start with a small amountaround 1/8 to 1/4 teaspoon per cup of liquid,
whisk well, then adjust. Guar gum thickens as it hydrates and can continue to tighten as it sits.

Best for: cold sauces, dressings, ice-cream-style mixtures, puddings, and some hot gravies.

Pro tip: Mix into cold liquid first, then heat while stirring if your recipe requires cooking.

11) Pectin (The Fruit-Friendly Thickener)

If you’re thickening fruitthink jammy fillings, fruit sauces, or glazespectin is a natural fit. It’s the plant-based
gelling agent found in many fruits, and it helps fruit mixtures set up into something spreadable and sliceable.

Swap approach: Pectin isn’t a direct 1:1 swap for cornstarch in every recipe, but it can be the best choice
when the goal is a fruit gel rather than a starchy sauce. Follow pectin directions for the specific type you have
(some need more sugar and acid; others set with calcium).

Best for: jams, jellies, fruit glazes, fruit-forward pie fillings (especially when you want a set, not a slurry).

Pro tip: If your fruit is already high in natural pectin (like apples), you may need less added thickener overall.

Common Mistakes (So You Don’t End Up with Sauce Cement)

• Skipping the slurry: Most starches clump if added straight into hot liquid. Whisk into cold water first.
• Adding everything at once: Thickeners are easier to add than to subtract. (This is also true of texting your ex.)
• Boiling too long: Some thickeners tighten with prolonged heat; aim for a gentle simmer once thickened.
• Expecting identical results: Flour makes things opaque; starches can be glossy; gums can be ultra-smooth. Choose on purpose.

Kitchen Experiences: What Usually Happens in Real Life (and How to Win Anyway)

In real kitchens, cornstarch substitutions rarely fail because the substitute is “wrong.” They fail because the cook expects
the substitute to behave exactly like cornstarch without changing technique. The biggest “aha” moment tends to be
realizing that thickening is a process, not a button you push.

A common experience: someone thickens a stir-fry sauce with flour, then wonders why it looks cloudy and tastes a little bready.
That’s not user error; that’s flour being flour. In that situation, a starch-based substitute (arrowroot, potato starch, tapioca starch,
or sweet rice flour) usually delivers a more familiar sheen. Meanwhile, flour shines when you actually want that cozy gravy vibe
like turkey drippings, pot pie filling, or a hearty stew where nobody is judging clarity.

Another classic moment is the “lump panic.” It usually starts the same way: starch gets dumped straight into hot liquid,
forming little dumplings that refuse to break up. The fix is almost always the same: pull a bit of liquid out, cool it down,
whisk your thickener into that to make a slurry, then stream it back in while whisking. It feels like extra work, but it’s the
difference between a sauce that’s smooth and a sauce that needs therapy.

Then there’s the over-thickening spiral. Someone adds a cornstarch substitute, sees only a tiny change, adds more, and suddenly
the pot becomes a glossy paste with the personality of wallpaper glue. The trick is patience: many thickeners take a minute or two
to reach full strength, and some continue to thicken as they cool. When in doubt, add in small increments, simmer briefly, and wait.
If you overshoot, dilute with a splash of stock, water, milk, or whatever matches the dish, then re-season.

For fruit pies, the “why is it runny?” experience is practically a rite of passage. Fruit releases juice as it bakes, and different
fruits behave wildly: berries are juicy, apples are sturdier, frozen fruit tends to leak more. Real-life success often comes down to
two habits: (1) choose a thickener that suits fruit baking (tapioca-based options are popular here), and (2) let the pie cool long enough
for the filling to set. Cutting too soon is like opening the oven mid-risetechnically allowed, emotionally reckless.

Finally, for anyone doing gluten-free cooking, the “gums are magic… until they aren’t” learning curve is real. Xanthan gum and guar gum
can create silky sauces and stable dressings, but they demand restraint and good mixing. The win is starting tiny and blending thoroughly.
The moment you treat gums like flour (by adding spoonfuls), you’ll get a texture that feels less like dinner and more like a science fair.

The overall takeaway from real-world kitchens is comforting: you don’t need the “perfect” substitutejust a smart match for the dish and
a technique that respects how that substitute behaves. Once you get that, running out of cornstarch stops being a crisis and starts being
a mildly annoying scavenger hunt with a delicious ending.