Out of cream of mushroom soup and the casserole is half-assembled? You have more options than you think, and most of them work better than the canned version anyway. The quickest swap is a 1:1 ratio of cream of chicken or cream of celery soup. The closest from-scratch substitute is a roux made with butter, flour, milk, and sauteed mushrooms, ready in about 12 minutes.
Cream of mushroom soup is essentially a thickened bechamel with mushrooms and broth folded in. Once you understand the formula, you can recreate it from almost anything in your pantry, and you can match the texture more precisely than a can ever could.
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What a 10.5 oz can of cream of mushroom soup actually is
A standard can holds about 1 1/4 cups (roughly 300 ml) of concentrated soup. The ingredient list is short: water, mushrooms, vegetable oil, modified food starch, wheat flour, cream, salt, and flavorings. The starch and flour do the thickening. The cream contributes about 4 grams of fat per serving. The salt is high, often around 870 mg per serving, which matters when you choose a substitute.
Any swap you make should hit three targets: a creamy, spoon-coating body, a savory backbone, and enough salt to season the dish. Miss one and the casserole tastes off.
Pantry swaps that work in a 1:1 ratio
These are the quickest fixes when you need to keep cooking. Use the same volume the recipe calls for.
- Cream of chicken soup. The closest flavor match. Works in tuna noodle casserole, green bean casserole, and pork chop bakes. Slightly more poultry-forward.
- Cream of celery soup. Milder and slightly vegetal. Best when the dish already has a strong protein, like beef stroganoff or chicken and rice.
- Cream of potato soup. Heavier and starchier. Good for hot dishes that bake more than 45 minutes, since it holds up to long heat.
- Condensed cheddar cheese soup. Pushes the dish toward a gratin. Use it when you want cheesy notes anyway.
For all of these, taste before adding extra salt. Canned soups are already heavily seasoned.
The 12-minute scratch substitute
This is the version we recommend when you have a few extra minutes. It tastes far better, lets you control the salt, and uses ingredients you probably already have. The recipe makes the equivalent of one 10.5 oz can.
Ingredients:
- 2 tablespoons butter
- 1 cup finely chopped mushrooms (cremini, white button, or a mix)
- 2 tablespoons all-purpose flour
- 1/2 cup chicken or vegetable broth
- 1/2 cup whole milk or half-and-half
- 1/4 teaspoon salt
- Pinch of black pepper
- Optional: 1/4 teaspoon onion powder, splash of Worcestershire
Steps:
- Melt the butter in a small saucepan over medium heat. Add the mushrooms and cook 4 to 5 minutes until they release their liquid and start to brown.
- Sprinkle the flour over the mushrooms and stir for 1 minute to cook off the raw-flour taste.
- Slowly whisk in the broth, then the milk. Keep whisking until smooth.
- Simmer 3 to 4 minutes, stirring often, until it thickens to a spoon-coating consistency.
- Season with salt, pepper, and any optional add-ins. Use immediately or refrigerate up to 3 days.
Fresh cremini or white button mushrooms work fine, but if you grow your own at home with one of the fresh-pick mushroom grow kits, the flavor difference in this substitute is noticeable. Fresh-cut mushrooms hold more moisture and contribute a meatier, less metallic taste than older grocery-store specimens.
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If you cannot use dairy, swap the butter for olive oil and the milk for full-fat coconut milk or unsweetened oat milk. Oat milk is the closest to dairy in mouthfeel. Coconut milk works but contributes a faint sweetness, so add a quarter teaspoon more salt to balance it.
For gluten-free, replace the all-purpose flour with the same volume of cornstarch (mixed with the broth first to prevent lumps) or sweet rice flour. Cornstarch produces a glossier sauce, while rice flour stays more matte and stew-like.
Honest note: dairy-free versions tend to separate during long bakes. If the casserole bakes more than 30 minutes, add half a teaspoon of nutritional yeast or a tablespoon of cashew cream to stabilize it.
Greek yogurt and sour cream shortcuts
For a stovetop dish (not a long bake), you can use 3/4 cup of Greek yogurt or sour cream mixed with 1/4 cup of broth, a tablespoon of flour, and a splash of mushroom-soaking liquid. This works beautifully in stroganoff or quick chicken skillet dinners. It does not hold up to oven temperatures above 350 degrees Fahrenheit without curdling, so save it for the stovetop.
Using fresh or dried mushrooms instead of canned soup entirely
If your recipe is essentially a vehicle for mushroom flavor (think chicken Marsala, stroganoff, or a baked rice dish), you may not need a soup substitute at all. Instead, saute 8 ounces of sliced fresh mushrooms with a chopped shallot, deglaze with half a cup of broth or white wine, and stir in half a cup of heavy cream. Total time: about 10 minutes. The result is closer to what most home cooks were trying to taste in the first place.
Dried mushrooms (porcini, shiitake, or a mix) deepen the flavor further. Soak 1/4 cup of dried mushrooms in 1 cup of hot water for 15 minutes, then strain and use both the rehydrated mushrooms and the soaking liquid in your sauce.
Which substitute fits which recipe
Quick reference table:
- Green bean casserole: The 12-minute scratch substitute or cream of chicken.
- Tuna noodle casserole: Cream of celery (lighter) or the scratch version.
- Pork chop bake: Cream of chicken or the scratch version with extra thyme.
- Chicken and rice: Scratch version, or cream of celery with extra mushrooms stirred in.
- Beef stroganoff: Greek yogurt and mushroom shortcut. Do not use canned soup here; the result is too sweet.
- Meatballs and gravy: Scratch version, or beef gravy thickened with sour cream.
Once you make the scratch version once or twice, you will probably stop reaching for the can. It is faster than driving to the store, costs less, and you control every variable. Keep a small jar of dried porcini in your pantry and you are never more than 15 minutes away from a better-than-canned mushroom sauce.
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Vegan Cream of Mushroom Soup: Rich, Creamy, and 35 Minutes
Vegan Cream of Mushroom Soup: Rich, Creamy, and 35 Minutes