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Out of Butter, one case

Can you substitute salted butter for unsalted?

5 options, ranked, with the exact amount

Use thisBest of 5 options

Use Salted butter

1 cup for every cup of butter

Yes: use salted butter in the same amount and cut the recipe's added salt by about ¼ teaspoon for each stick (½ cup) of butter. Going the other way, add about ¼ teaspoon of salt for each stick of unsalted butter. The swap breaks where there is no added salt to take out, such as buttercream, and where butter is most of the recipe, because brands salt their butter differently.

Verdict —
Tweak it
The tweak —
Cut the added salt by ¼ tsp per stick (½ cup) of butter: 1/8 tsp for 4 tbsp, ½ tsp for 1 cup.
Best for —
cookies, brownies, muffins and quick breads
Pantry —
Likely in your cupboard

One casethe full butter card

Every option, one card

Ranked
Butter substitutes compared
SubstituteInstead of 1 cup butter
Salted buttercookies, brownies, muffins and quick breads1 cupTweak it
Unsalted butter + saltrecipes written for salted butter1 stick butter + ¼ tsp salt per stickWorks
Stick margarinecreamed cakes and cookies when there is no butter of either kind1 cupTweak it
Vegan butter blockdairy-free baking that creams the butter1 cupTweak it
Shorteningpie crust and biscuits1 cup + 2 tbsp waterTweak it
What changes5 options

Salted butter

the same once the added salt is reduced

The same butter with salt worked in, about ¼ teaspoon per stick. It creams, melts, browns and bakes exactly as unsalted butter does, so the only thing to change is the salt you add.

Best for
cookies, brownies, muffins and quick breads, cakes that list salt in the ingredients, pan sauces, mashed potatoes and other cooking, salted at the end
Prep
Cut the added salt by ¼ tsp per stick (½ cup) of butter: 1/8 tsp for 4 tbsp, ½ tsp for 1 cup.
Suits
vegetarian
Contains
dairy
Where it fails
Buttercream and other frostings with no added salt, where 2 sticks of salted butter put about ½ tsp of salt into something meant to be sweet. Shortbread, puff pastry and croissant dough, where butter is so much of the recipe that brand-to-brand differences in salt show.

If the recipe lists less salt than you need to remove, leave the salt out entirely and expect the result to be slightly saltier than written.

Unsalted butter + salt

the same

The reverse case: the recipe calls for salted butter and you have unsalted. Add back the salt the butter would have carried.

Best for
recipes written for salted butter, older and family recipes that say only butter and list little or no salt, garlic bread, corn on the cob and compound butter
Prep
Add ¼ tsp fine salt per stick (½ cup) to the dry ingredients, or beat it into the softened butter.
Suits
vegetarian
Contains
dairy
Where it fails
On the table: unsalted butter spread on bread tastes flat. Sprinkle a pinch of salt over it instead of trying to mix salt into cold butter.

Stick margarine

cleaner and a little saltier, without the dairy flavor

The firm, foil-wrapped stick is made to about the same 80% fat as butter, so it stands in for unsalted butter cup for cup. Nearly all of it is salted.

Best for
creamed cakes and cookies when there is no butter of either kind, melted-butter recipes
Prep
Use the stick, never a tub spread, and cut the added salt by about ¼ tsp per stick as you would for salted butter.
Where it fails
Shortbread, buttercream and anything else where butter is the flavor. Many margarines contain whey, so read the label for a dairy-free bake.

Vegan butter block

close, with a faint oily or coconut background that varies by brand

A plant-based block made to behave like butter in a mixer. Most are salted, so treat it as salted butter.

Best for
dairy-free baking that creams the butter, dairy-free frosting
Prep
Chill it 20 minutes before creaming and cut the added salt by about ¼ tsp per ½ cup.
Suits
vegan, dairy-free
Where it fails
A warm block gives a greasy dough and cookies that spread. Tub versions are softer and wetter and do not bake the same way.

Shortening

blank; the butter flavor is gone

A solid fat with no salt at all, for when the point of unsalted butter is control of the salt. It is all fat, so it needs the water that butter would have brought.

Best for
pie crust and biscuits, cookies that should stay tall
Prep
Add 2 tbsp water or milk per cup and leave the recipe's salt as written.
Suits
vegan, dairy-free
Where it fails
Anything where you taste the butter. It will not brown, so there is no brown-butter flavor.

Tips for substituting butter

5 tips
  1. The arithmetic: 1 stick = ½ cup = 8 tbsp of butter carries about ¼ tsp of salt. Remove 1/8 tsp for half a stick, ¼ tsp for one stick, ½ tsp for two.
  2. The ¼ tsp figure is for table salt or fine sea salt. Diamond Crystal kosher salt is about half as salty by volume, so if the recipe measures that, cut about ½ tsp per stick.
  3. Check the label if you want to be closer. US salted butter usually lists about 90 mg sodium per tablespoon, which is a little over ¼ tsp of salt per stick; a brand that lists more is saltier.
  4. In cooking, add no salt until the end. Melt the salted butter into the sauce, soup or mashed potatoes, taste, then season.
  5. Watch the other salty ingredients. With salted butter and salted nuts, pretzels, bacon or soy sauce in the same recipe, leave the added salt out and taste before you add any back.

Questions

5 questions

How much salt is in a stick of salted butter?

About ¼ teaspoon per stick (½ cup, 8 tablespoons), which is the figure most recipes and butter makers work from. It varies by brand, from roughly ¼ to a little over 1/3 teaspoon, which is why recipes that need exact control name unsalted butter.

How do I substitute unsalted butter for salted?

Use the same amount of butter and add about ¼ teaspoon of fine salt per stick (½ cup). In baking, stir it in with the flour. For a recipe that says only butter and lists no salt at all, it was probably written for salted butter, so add the ¼ teaspoon per stick.

What if the recipe has no added salt to reduce?

Then the salt in the butter stays in the dish. In cookies or a cake that is usually welcome. In buttercream it is noticeable: 1 cup of salted butter adds about ½ teaspoon of salt to the frosting. If you have some unsalted butter, use it for the frosting and put the salted butter in the cake.

Does salted butter change how cookies or cake bake?

No. The fat and water are close enough that creaming, spread, rise and browning are the same. The only difference you can taste is salt, so a cookie recipe with 2 sticks of butter and 1 teaspoon of salt needs ½ teaspoon when the butter is salted.

Can I use salted butter in bread dough?

Yes. Reduce the dough's salt by about ¼ teaspoon per stick of butter. Do not take out more than that: salt controls how fast yeast works, and a dough with far too little salt rises quickly and tastes flat.