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(822)
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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822

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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.

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.

What can I add to my French onion soup to make it taste better? ›

Fresh thyme: always go with fresh thyme sprigs over dried. Worcestershire sauce: the flavors in Worcestershire sauce are a mix of vinegar, garlic, chile, molasses, etc. which act as the French onion soup spices. A tablespoon goes a long way to help bring out the umami flavors.

What is the best wine to use for French onion soup? ›

Wine is optional to deglaze the pan and add flavour to the soup. I recommend a dry white or red wine, such as a good quality Pinot Grigio/Gris, Sauv Blanc, Sémillon, Chardonnay, Merlot or Pinot Noir. Generally, if you can't drink it, don't cook with it.

Are red or yellow onions better for French onion soup? ›

Onions: You can use white, yellow or red onions for French onion soup. But to make it the classic way, you will need 5-6 large yellow onions, peeled and thinly sliced. Butter: The tastiest (French) way to caramelize those onions.

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.

Why do French people eat onion soup? ›

The Onion Soup, a traditional and warming dish

It has even become a trendy dish that tourists are eager to try to experience French gastronomy. However, onion soup is in fact not part of French people's daily meals. It was originally meant to be eaten after a family reunion in the middle of the night to cure hangovers

How do you thicken French onion soup? ›

If you want to thicken your French onion soup, you can add a bit of flour. Combine a couple of tablespoons of flour with a teaspoon of salt and whisk in about a quarter cup of water. Bring the mixture to a boil, then reduce the heat and simmer for about 10 minutes, until thickened.

How to fix bland French onion soup? ›

Umami is the fifth basic taste and can greatly enhance the flavor of any dish, including French onion soup. Consider these umami-rich ingredients to boost the taste: Add a splash of soy sauce or Worcestershire sauce to the soup. These condiments are packed with umami and will add depth and complexity to the flavors.

What is Panera French onion soup made of? ›

Sweet caramelized onions in a savory broth with a sherry wine vinegar gastrique, sea salt, topped with cheese and black pepper and sea salt croutons.

How do you make French onion soup less bland? ›

Most likely it could be from not caramelizing the onions long enough, as this is crucial for flavor development. Also, be sure to use a good quality broth and season the soup properly with salt and pepper. You can try adding a splash of balsamic vinegar or Worcestershire sauce for a boost of flavor.

Why is my French onion soup so bland? ›

If you don't add enough salt, pepper, or other herbs and spices, the soup may taste bland.

How do you add depth of flavor to soup? ›

"If your broth is lacking in savory richness, try adding roasted onion, tomato paste, mushrooms, seaweed, soy sauce, or miso. These ingredients add umami flavor and depth to broth," she says.

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.

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