French Onion Soup Recipe (2024)

Recipe from Ali-Bab

Adapted by Amanda Hesser

French Onion Soup Recipe (1)

Total Time
2 hours 15 minutes
Rating
4(821)
Notes
Read community notes

The onion soup originates from the French cookbook “Gastronomie Pratique,” which was written in 1907 by Henri Babinski. The Times published the recipe in 1974, when the book was first translated into English.

It is a strange recipe for soup that yields delicious results. Baguette toasts are spread with butter and layered with grated cheese, sautéed onions and tomato purée. Then, in what seems to be a nod to stone soup, salted water is gently poured in. The dish is then simmered and baked, and by the time it is done, the “soup” is like a savory bread pudding and the top has a thick, golden crust that your guests will fight to the death over. —Amanda Hesser

Featured in: Recipe Redux; 1907: Soupe à l'Oignon Gratinée

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Ingredients

Yield:Serves 6

  • 1baguette, cut into ½-inch slices (about 25 to 30)
  • 9tablespoons butter, softened
  • 9ounces Emmental cheese, finely grated
  • 8medium yellow onions, thinly sliced (about 12 cups)
  • 1tablespoon kosher salt, more to taste
  • 1cup tomato purée

Ingredient Substitution Guide

Nutritional analysis per serving (6 servings)

588 calories; 33 grams fat; 19 grams saturated fat; 0 grams trans fat; 9 grams monounsaturated fat; 2 grams polyunsaturated fat; 57 grams carbohydrates; 7 grams dietary fiber; 17 grams sugars; 19 grams protein; 1103 milligrams sodium

Note: The information shown is Edamam’s estimate based on available ingredients and preparation. It should not be considered a substitute for a professional nutritionist’s advice.

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French Onion Soup Recipe (2)

Preparation

  1. Step

    1

    Toast the baguette slices and let them cool. Spread a generous layer of butter on each slice (you will need about 5 tablespoons), then lay the slices close together on a baking sheet and top with all but ½ cup of cheese.

  2. Step

    2

    In a large saucepan, melt the remaining 4 tablespoons butter over medium heat. Add the onions, season with salt and sauté, stirring occasionally, until very soft and golden, about 15 minutes.

  3. Step

    3

    In a 5-quart casserole, arrange a layer of bread slices (about ⅓ of them). Spread ⅓ of the onions on top, followed by ⅓ of the tomato purée. Repeat for two more layers. Sprinkle with the remaining ½ cup cheese. To avoid boiling over, the casserole must not be more than ⅔ full.

  4. Step

    4

    In a saucepan, bring 1½ quarts water to a boil. Add the salt. Very slowly pour the salted water into the casserole, near the edge, so that the liquid rises just to the top layer of cheese without covering it. (Depending on the size of your casserole, you may need more or less water.)

  5. Step

    5

    Preheat the oven to 350 degrees. Put the casserole on the stove and simmer uncovered for 30 minutes, then transfer to the oven and bake uncovered for 1 hour. The soup is ready when the surface looks like a crusty, golden cake and the inside is unctuous and so well blended that it is impossible to discern either cheese or onion. Each person is served some of the baked crust and some of the inside, which should be thick but not completely without liquid.

Ratings

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821

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Private Notes

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Cooking Notes

michael sheehy

Took Jacques Pepin's suggestion and added 1/8 cup of both Worcestershire and Balsamic vinegar to onions as they started to cook. Added considerable depth and complexity vs recipe as written.

Badasaja

As expected, not exactly authentic french onion soup, but it yields uncanny favor from emmental and lightly caramelized onion. I've followed the recipe pretty much faithfully, and the result lacked liquid. It was moist but need more water to be called a genuine soup.

CL

This was absolutely delicious. My only tweak would be to add the liquid before you add the top layer of cheese. It was really hard to pour all the liquid into my dutch oven without dousing the cheese (which makes browning much harder).

When I make this again, I would probably add the liquid to the pan first, then add a thin layer of breadcrumbs as sort of a barrier between the liquid and the top layer of cheese, so it browns properly.

Anne Pelak

I saved this recipe when it ran in NYT Magazine several years ago. It is easy and delicious. Not traditional onion soup, but very, very good.

Karina Rosenberg

This combination of onions, bread and Gruyere is called a panade. Richard Olney has a wonderful recipe in Simple French Food.

Karina Rosenberg

This is known as an "onion panade". Check out Richard Olney's excellent but longer recipe in Simple French Food. It is a meal in a bowl and a party in your mouth.

susan

Next time, I would halve the amount of tomato purée, it was too strong a flavor for me and overwhelmed the rest of the ingredients. And, maybe less layering in a shallower dish so more people get more of the crust.

Jenni

This was indescribably delicious. I added some Worschestchire and balsamic to the onions while they sauteed. Instead of tomato puree, I sprinkled 1 tsp of tomato powder over each layer and used homemade beef broth instead of water.

C.E. Wall

I had no idea how this one would really come together. A "strange recipe" for a soup indeed! (Found it needed a bit more than an hour in my oven to develop a crust.)

Anne

Right after graduating from college, I saved the July 25, 1975 NY Times clipping with this recipe, from an article about Elizabeth Benson's translation of Henri Babinski's Gastronomie Pratique, https://www.nytimes.com/1974/07/25/archives/finally-monumental-cookbook-is-translated-respectful-silence-during.html. I've made this many, many times since, with only slight variations. It is unctuous, and not at all liquidy. Truly delicious. Don't use sweet onions, though - the flavor will be weak.

paul

nothing good, takes less than a few hours to prepare.

Mary Arendes

I love this dish. I have substituted chicken broth for salted water. Now I'm going to try the suggestion below to add worcestershire and balasamic to the onions!

Susan Bass

I have made this many times exactly as the recipe states and it never disappoints. Here in the New Haven area we are lucky to have really delicious ciabatta bread which is perfect. My only time-saver is that I butter and layer the bread as I go, grating the gruyere atop each layer as I go.

lyssa

Delicious winter dish. I substituted dense brown bread - quelle horreur! - which made it a different dish but deeply satisfying. Incredibly rich flavor despite the absence of beef broth you find in typical French onion soup recipes.

Anne

I use a small 14.5 oz. can of diced, pureed or whole/chopped tomatoes with the liquid. Paste (diluted with some water or wine), canned unflavored sauce, or fresh tomatoes work, too. This is a flexible recipe - I usually use more cheese and less butter on the bread, and lightly salt the onions but not the water. It is baking right now while I type...

tcflorida

Gross. Breast, buttery, tomatoey mess. Not a soup at all but more like a dense cake. Threw most of it (including pricey emmental) away. Stick with a traditional onion soup recipe.

JanHinNC

What sort of casserole dish does one use that can go on the stove for 30 minutes, then into the oven? Mine are Pyrex and can’t do stovetop. I have one cast iron casserole, but I think it is too deep (more like a soup/stew dish).

Esuzu

Aweful. It lacks depth .French use beef stock instead of water as liquid base.

Linnie

Read the notes before prepping.

Sophia Leahy

I forget when this was printed in the Times; I was getting the paper subscription so perhaps it was last century. I have it taped into my recipe folder and have made it many times. It is utterly delicious and I'm glad to see it here.

Nate

Maybe no need to butter the bread. A way to reduce the fat content. I'd add more water and use a bigger pan/pot next time to give it less of a lasagna, and more of a soup feel.

Sophia Leahy

I’ve never buttered the bread.

PADR

Some assembly required — but totally worth it! Can second the advice to season the onions with Worcestershire and Balsamic, and to thin the tomato paste with a little water. If you have 30 minutes’ extra time and a suitably large Dutch oven, the onions can be cooked down in the Dutch oven with occasional stirring, and then transferred out to a big bowl while the “soup” is assembled in the same Dutch oven. Less dishwashing, more flavor!

MM

This did not turn out as a *soup*, but it definitely turned out delicious.

Mary Arendes

I love this dish. I have substituted chicken broth for salted water. Now I'm going to try the suggestion below to add worcestershire and balasamic to the onions!

Jenni

This was indescribably delicious. I added some Worschestchire and balsamic to the onions while they sauteed. Instead of tomato puree, I sprinkled 1 tsp of tomato powder over each layer and used homemade beef broth instead of water.

Mollie O'Brien

Can someone tell me if I did 1 1/2 times this recipe in an 8 Qt casserole if the cooking time would be the same?

Anne

Right after graduating from college, I saved the July 25, 1975 NY Times clipping with this recipe, from an article about Elizabeth Benson's translation of Henri Babinski's Gastronomie Pratique, https://www.nytimes.com/1974/07/25/archives/finally-monumental-cookbook-is-translated-respectful-silence-during.html. I've made this many, many times since, with only slight variations. It is unctuous, and not at all liquidy. Truly delicious. Don't use sweet onions, though - the flavor will be weak.

George

not for nothin' but another comment said this was a panade; respectfully,a panade is translated loosely as a "paste" made with a starchy item and a liquid (think pesto) used to tenderize meatballs... create quenelles... etc. It would be unfortunate if something thought this was a recipe for a paste and not an onion stew.

tomato puree?

Is that canned tomato sauce or paste?Or fresh onions purées in the blender?

Anne

I use a small 14.5 oz. can of diced, pureed or whole/chopped tomatoes with the liquid. Paste (diluted with some water or wine), canned unflavored sauce, or fresh tomatoes work, too. This is a flexible recipe - I usually use more cheese and less butter on the bread, and lightly salt the onions but not the water. It is baking right now while I type...

susan

Next time, I would halve the amount of tomato purée, it was too strong a flavor for me and overwhelmed the rest of the ingredients. And, maybe less layering in a shallower dish so more people get more of the crust.

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French Onion Soup Recipe (2024)

FAQs

How do you deepen the flavor of French onion soup? ›

A few sprigs of thyme and a bay leaf elevate the soup even more, but I take it a step further, adding a splash of fish sauce for complexity and depth—don't worry, it won't taste fishy—and a hit of cider vinegar to balance some of that oniony sweetness.

What is the difference between onion soup and French onion soup? ›

What is the Difference Between Onion Soup and French Onion Soup? French onion soup is always made with beef stock. Other onion soups can be made with chicken, vegetable, or beef stock. Additionally, French onion soup typically contains wine or sherry, which isn't typical or necessary in other onion soups.

What broth is French onion soup made of? ›

What Is French Onion Soup? French onion soup, or soupe à l'oignon gratinée, is a classic French dish made with caramelized onions and beef stock or broth. The soup is topped with bread and cheese, then gratinéed to rich, gooey perfection. It's traditionally served in a ramekin or a ceramic crock with a handle.

What is French onion soup mix made of? ›

The cast of charecters are simple, and hopefully ones you already have in your spice rack: Dry onion flakes, beef bullion granules or paste, onion powder, parsley, celery seed, paprika, black pepper.

Why do you put baking soda in French onion soup? ›

The caramelized onions for this soup cook more quickly due to a pinch of baking soda but still have that deep, slow-cooked flavor. Topping the soup with hot, cheesy toasts prepared while the soup simmers, eliminates the need to bake the soup in specialty French onion soup bowls.

Should French onion soup be thick or thin? ›

Made slightly thicker than most watered down soups because every mouthful NEEDS a slightly thickened texture to compliment the caramelized onions.

Why is French onion soup so expensive? ›

First, French onion soup calls for a ton of onions. While onions aren't expensive, there's a lot of labor involved in halving, peeling, and slicing 10, 12, 50, or one billion onions (I don't know how much soup you make).

Why is my French onion soup bitter? ›

The underlying flavor of this soup is the deep umami flavor of the caramelized onions. If you rush this process, the result will be a bitter charred flavor, and if you underestimate and skip this process the flavor will be nowhere near as deep or complex.

Why does French onion soup taste so good? ›

French onion soup is the ultimate comfort food. Onions get slowly cooked until sweet and caramelized, then simmered in rich broth until they're practically falling apart. To finish it off, toasted bread is added to give it that lovable crisp-gone-soggy texture and a generous amount of Gruyère cheese is melted on top.

What cheese can I use instead of gruyère in French onion soup? ›

Other Swiss types of cheese like Raclette cheese or Appenzeller Cheese or Dutch cheeses like Edam cheese or Gouda or Jarlsberg cheese from Norway or American Swiss cheese can all be substituted.

What are the best onions for soup? ›

Yellow is the ideal variety for caramelizing. When you are sauteing onions to build flavor as a base for your dish (soup, tomato sauce, you name it), the yellow onion is your friend. That being said, white onions are a totally acceptable substitute for yellow, especially if you're cooking them.

Is French onion soup good for you? ›

Well, you'll be pleased to know that french onion soup is, in fact, a highly nutritious choice. Onions, as part of the Allium family, contain Quercetin which is a powerful anti-inflammatory and should not be overlooked as a vegetable when considering your daily 7-a-day.

Why is my French onion soup watery? ›

Sometimes soup just needs to simmer longer to reach the perfect consistency. Check to see if the vegetables are tender, and then taste the broth. If the soup tastes a bit watery, give it more time.

What is the bowl called for French onion soup? ›

French onion soup is traditionally served in lionhead bowls, which are deep but not very wide porcelain bowls. Here are four reasons why these bowls are perfect: Plenty of soup. Even as the bread on top starts to soak up some of the soup, there's still plenty left underneath.

What goes well with French onion soup? ›

Pair it with a simple salad, like my Caesar Salad or Pear Salad, and any protein you like! It would also be excellent with pasta. Try serving it with one of these recipes: Orecchiette with Broccoli Rabe.

How to doctor up canned French onion soup? ›

Some fresh rosemary or thyme brings a woody, peppery taste to the soup, complementing the umami flavor of the beef stock. With a splash of balsamic vinegar and green onions or fresh basil as a garnish, the canned soup is transformed from a grocery store original into a gourmet dish.

How do you get the depth of flavor in vegetable soup? ›

Dried herbs and seasonings: homemade seasoned salt, black pepper, Italian seasoning, and dried bay leaves lend flavor to the soup. Stock: I much prefer chicken stock over vegetable stock in terms of flavor, though if you want to keep this soup vegetarian, feel free to use vegetable broth or stock instead.

How do you get the depth of Flavour in vegetable soup? ›

You can also add tomato paste or fresh or dried herbs like oregano or thyme. Starchy root vegetables like potato, parsnips, turnips and swede will add body to the soup and turn it into a true meal in a bowl. Using a good-quality stock (or making your own) will enhance the flavour of the soup.

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