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Out of Cornstarch, one case

Can you substitute flour for cornstarch?

3 options, ranked, with the exact amount

Use thisBest of 3 options

Use All-purpose flour

2 tbsp for every 1 tbsp of cornstarch

Yes, for thickening: use 2 tablespoons of all-purpose flour for each tablespoon of cornstarch, and simmer the sauce at least 2 minutes after it thickens to cook out the raw flour taste. The sauce turns out opaque and matte instead of clear and glossy. For frying, flour can replace cornstarch in the same amount, but the coating is less crisp.

Verdict —
Tweak it
The tweak —
Whisk the flour into an equal amount of soft butter or into cold water first, then simmer at least 2 minutes after it thickens.
Best for —
gravy, stew and pot pie filling
Pantry —
Likely in your cupboard

One casethe full cornstarch card

Every option, one card

Ranked
Cornstarch substitutes compared
SubstituteInstead of 1 tbsp cornstarch
All-purpose flourgravy, stew and pot pie filling2 tbspTweak it
Flour for frying and dredgingfried chicken and cutletsSame amountYou'll taste it
Rice flourgluten-free gravy and sauces2 tbspTweak it
Self-rising flournot a swapNot for this
What changes3 options

All-purpose flour

slightly cereal-like until fully cooked; opaque, not glossy

Flour has about half the thickening power of cornstarch because it is only part starch. It needs more of it and more time on the heat.

Best for
gravy, stew and pot pie filling, cheese sauce and chowder, fruit pie filling where clarity does not matter
Prep
Whisk the flour into an equal amount of soft butter or into cold water first, then simmer at least 2 minutes after it thickens.
Contains
gluten
Where it fails
Clear glazes, stir-fry sauces that should shine, and gluten-free cooking.

Flour for frying and dredging

browner and more bread-like; less shatter-crisp

Flour coats and browns well but holds more oil and forms gluten, so the crust is breadier and softens sooner.

Best for
fried chicken and cutlets, pan-fried fish, dusting meat before browning
Prep
For more crunch, add 1 tsp baking powder per cup of flour, or use rice flour for half of it.
Contains
gluten
Where it fails
Light tempura-style coatings and velveting meat for stir-fry, where cornstarch is what gives the result.

Rice flour

neutral; slightly grainy if undercooked

A gluten-free flour that thickens like wheat flour and fries crisper than it.

Best for
gluten-free gravy and sauces, crisp frying batters
Prep
Whisk into cold liquid first to prevent lumps.
Suits
gluten-free
Where it fails
Glossy dessert sauces.

Self-rising flour

It contains baking powder and salt.
Best for
nothing here: use plain flour
Contains
gluten
Where it fails
The leavening foams in a sauce and the salt throws off the seasoning.

Tips for substituting cornstarch

4 tips
  1. To replace 1 tbsp cornstarch in a slurry, mix 2 tbsp flour with ¼ cup cold water until smooth before adding it to the pot.
  2. Flour thickens at a simmer and keeps thickening for a few minutes. Wait before adding more.
  3. A flour-thickened sauce reheats and freezes better than a cornstarch one, which can turn spongy when thawed.
  4. In baking, when a recipe uses 1 to 2 tbsp cornstarch for tenderness, as in shortbread or cookies, replace it with the same amount of flour. The result is slightly less tender.

Questions

4 questions

How much flour equals 1 tablespoon of cornstarch?

2 tablespoons of all-purpose flour.

How much flour equals 2 tablespoons of cornstarch?

¼ cup of all-purpose flour.

Can I use flour instead of cornstarch in pie filling?

Yes. Use twice as much flour. The filling is cloudier and a little softer-set. It suits apple pie well; for a clear berry or cherry filling, tapioca or arrowroot is closer to cornstarch.

Can I use flour instead of cornstarch for frying?

Yes, in the same amount. The crust is thicker and less crisp. Adding a little baking powder or mixing in rice flour brings back some crunch.