Here's everything worth knowing about soup, french onion and how to pick it, what it is, how to store it, and what to use instead, plus 32 recipes to cook tonight.

What is soup, french onion?

French onion soup is two things in one name, and which one you mean changes everything about how you use it.

As a dish, it is caramelized onions simmered in beef stock, ladled over a slice of baguette under a blanket of melted gruyere. As a pantry ingredient, it is the canned condensed version: a salty, oniony concentrate that home cooks reach for to build flavor fast.

On Recipeland the canned form does most of the work. It turns up across pot roasts, brisket, smothered chicken, and savory casseroles, where it acts as a one-can shortcut for browned onions plus seasoned stock.

Knowing both faces of it, the simmered bowl and the can, is the whole game.

Cooking With Canned French Onion Soup

Treat the condensed can as a flavor base, not a finished soup. It is already concentrated, so it stands in for the browned onions and seasoned beef stock a braise would otherwise need.

Pour it straight over a chuck roast in the slow cooker and it does the seasoning for you. That is exactly the move behind French Onion Beef and Crock Pot Roast Beef.

The same logic carries the gravy in Salisbury Steak with Onion Gravy, where the can becomes a fast pan sauce without a separate stock. For brisket, recipes like Easy Beef Brisket lean on it to keep the meat moist through a long oven cook.

It also binds casseroles. In Rice & Noodle Casserole the condensed soup is the liquid and the seasoning at once, soaking into the starch as it bakes. Stir a can into sour cream and you have a five-minute dip with no chopping.

One habit worth keeping: taste before you add more salt. The canned version is high in sodium, so a braise that reduces for hours can turn sharp if you season it like plain stock.

Making the Soup From Scratch

A real bowl of French onion soup lives or dies on the onions. Slice two pounds thin and cook them low and slow in butter for 40 to 60 minutes, stirring often, until they collapse into a deep mahogany jam.

Rushing this is the classic mistake. Pale onions give you a thin, sweet soup instead of a savory one.

Deglaze the pan with a splash of dry white wine or sherry, then add good beef stock and a thyme sprig. Simmer 20 to 30 minutes.

The cheese crouton on top is not optional. Float a toasted baguette slice, pile on grated gruyere, then broil until it browns and bubbles over the rim.

Gruyere is the traditional choice because it melts smoothly and brings a nutty bite. Swiss or a sharp white cheddar work if that is what you have, though they brown a little differently.

What Goes Wrong

The single most common failure is undercooking the onions. Deep color means deep flavor, and there is no shortcut that fakes it. Give them the full hour over medium-low heat.

With the canned version, the trap is the opposite: oversalting. Because the soup is condensed and already seasoned, dishes that simmer down concentrate that salt further. Hold back added salt until the very end, then adjust.

The soup pairs naturally with beef and with melty alpine cheeses, both playing off the sweetness of slow-cooked onions. A dry sherry or a glass of red rounds out the bowl.

Substitutes

If a recipe calls for a can of condensed French onion soup and you are out, the closest fix is condensed beef broth plus a handful of caramelized onions. You supply the onion the can would have brought.

Onion soup mix whisked into a cup of beef stock gets you most of the way for a braise or casserole, though it runs saltier, so cut any added salt.

For a from-scratch bowl, beef stock simmered with deeply browned onions is the real thing and needs no substitute. In a pinch, a rich mushroom stock can stand in for the beef base, but you lose the meaty backbone that defines the soup.

Buying & Storage

Canned condensed French onion soup keeps in the pantry for a year or two. Check the date on the can and avoid any that are bulging or dented along a seam.

Once opened, move leftovers to a covered container and use within three to four days in the fridge.

If you make the soup from scratch, it keeps four days refrigerated and freezes well for up to three months. Leave the bread and cheese off until you reheat and broil a fresh crouton.

Store-bought refrigerated or boxed soups follow the date on the package. Once opened, treat them like any fresh soup and finish within a few days.

When shopping, note that "French onion" on a label can mean either a ready-to-eat soup or a condensed concentrate meant as a cooking base. For the casserole and braise recipes here, you want the condensed can.

Nutrition

Quick facts

Food group: Soup, french onion is a member of the Soups, Sauces, and Gravies US Department of Agriculture nutritional food group.

In Chinese

汤，法式洋葱

British (UK) term

Soup, french onion

en français

la soupe, l'oignon française

en español

sopa, la cebolla francés

How much does soup, french onion weigh?

Amount	Weight
1 cup (8 fl oz)	246 grams
1 can (10.5 oz)	298 grams

Related

Soups, Sauces, and Gravies

Recipes using soup, french onion

There are 32 recipes that contain this ingredient.

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