French Onion Soup Recipe (2024)

By Sara Bonisteel

Updated Feb. 28, 2024

French Onion Soup Recipe (1)

Total Time
1 hour 20 minutes
Prep Time
10 minutes
Cook Time
1 hour 30 minutes
Rating
5(6,366)
Notes
Read community notes

In 1954, what was then called the Food News Department of The New York Times released a pamphlet simply called “Soups,” which had 20 recipes for soups “thick and thin, hot and cold,” including those for minestrone, shrimp bisque and this French onion soup. We’ve updated the recipe adding sherry and wine to layer in more flavors. The bulk of the time is spent on caramelizing the onions, a process that always takes longer than it seems it should. But it’s worth the wait.

Learn: How to Make Soup

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Ingredients

Yield:4 to 6 servings

  • 3tablespoons unsalted butter
  • 3 to 4large red or yellow onions (about 3 pounds), peeled and thinly sliced
  • ¾teaspoon kosher salt, plus more to taste
  • 2quarts beef stock (8 cups)
  • 1cup dry white wine
  • 1tablespoon dry sherry
  • 1tablespoon all-purpose flour
  • ½teaspoon black pepper, plus more to taste
  • 8 to 12(½-inch) slices French bread (from 1 loaf)
  • cups grated Gruyère cheese

Ingredient Substitution Guide

Nutritional analysis per serving (6 servings)

397 calories; 17 grams fat; 10 grams saturated fat; 0 grams trans fat; 5 grams monounsaturated fat; 1 gram polyunsaturated fat; 34 grams carbohydrates; 4 grams dietary fiber; 12 grams sugars; 20 grams protein; 1216 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

Make the recipe with us

  1. Step

    1

    Melt butter in a heavy Dutch oven over medium heat. Add onions and ½ teaspoon salt, stir and cover, letting onions soften for 5 minutes. Remove lid and let onions caramelize until golden brown over medium heat, stirring occasionally. Adjust heat if onions are browning too quickly. The caramelization process may take 45 to 60 minutes.

  2. Meanwhile, warm broth in a saucepan over low heat.

  3. Step

    3

    Once onions are caramelized, add wine and sherry to the pot and allow mixture to come to boil. Stir in flour and let thicken for a minute or two.

  4. Step

    4

    Slowly add warm broth, ¼ teaspoon salt and the pepper to the onion mixture and boil uncovered for 10 minutes. Add more salt and pepper to taste.

  5. Step

    5

    Heat the broiler, and arrange individual ovenproof casseroles on a baking sheet. Ladle soup into casseroles, and cover top with bread slices. Sprinkle each casserole generously with Gruyère.

  6. Step

    6

    Broil for a minute or two, watching carefully, until cheese melts and browns. Serve immediately.

Tip

  • You can prepare the soup through step 4 up to 2 months in advance. Thaw and reheat, then top with the bread and cheese and broil to serve.

Ratings

5

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6,366

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Private Notes

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Cooking Notes

diane

Simplify by making overnight caramelized onions. Fill slow cooker with 4-5 lbs sliced onions, pour 1/3 cup olive over the onions & mix well. Cover with lid and cook on HIGH for 7-9 hours. Yes it does indeed needs to be High. I had my doubts at first, but I've done this probably at least 20 times and the onions cook way down & caramelize beautifully. I haven't tried this yet with my new multi-cooker but plan to try that next using slow cooker function.

Gonzalo

1 Tbsp of Sherry is a very small amount, it won't add any significant flavour. Also, if Sherry boils for a long time, it completely loses its aroma. I suggest adding 2 tbsp on each individual soup dish just before broiling (that's the way people have fancy consomme in Madrid).

lotsadogs

When I make French Onion Soup, I cut the bread into crouton sized pieces and then brown them in butter in a large skillet on the stove. I use them in place of the toasted bread. It makes the soup easier to eat--no cutting through hard French bread crusts with a spoon--and I really like the extra flavor imparted by the croutons. And, I save some croutons for the leftover soup.

Elisa

Great and easy recipe. I suggest doubling the onions and mixing in some leeks. Also, since I don't have oven proof casseroles, I toasted the bread with the cheese on top (in toaster oven), and served on regular soup bowls.

Bri

I used vegetable stock plus a little soy sauce and a little bit of Worcestershire sauce instead of the beef broth to make it vegetarian. It was amazing! Thank you for the wonderful recipe.

Joanne

Toast bread first.

Gail

If you have it, use bacon fat rather than butter to carmelize the onions. Makes a huge flavor difference.

RES

This soup is marvelous, and perfect for a chilly day. I followed the recipe faithfully and used homemade beef stock. The hardest part for me was slicing those onions. My eyes were tearing so much, I had to put on a scuba mask to finish this step.

Gorney44

Great flavor but I’d say to double the onions.

Debbie

Loved this recipe. Finally somebody admits how long it takes to actually caramelize onions! The flavor is wonderful. I did cut the amount of beef broth to 6 Cups, because I agree with other cooks, there were just not enough onions to sustain 8 cups of broth. Next time I will double the onions.

Dennis

Several folks thought the amount of onions called for was insufficient. Note it says “ 3 or 4 large onions ( about 3lbs.). My onions were a little larger then a baseball and it took 9 to yield 3 lbs.

johonna

Delish and relatively easy. I took the advise of some posters here and added an onion and a leek. I also added a couple tablespoons of brandy with the wine and sherry, and some thyme with the stock. After all the stock was in, I let the soup reduce for 30 min. Oh, and I toasted the bread with butter under the broiler before adding to the soup. YUM!

Lori B

Broth and stock are used interchangeably in this recipe; they are not the same. Broth is made with vegetables, stock is made with just bones. I think the latter would be best here.

GamesDean

Don't get super hung up on the quantities in recipes. Treat it as more of a basic guideline with orderly steps. It's cooking, not science. This is a really good recipe for this soup. I just used the ingredients listed here in varying quantities and it was fantastic. I really, really, REALLY suggest making your own beef (or other) broth for this. Harris Teeter sells 2 lb. bags of beef bones. I used two bags, boil/rinse, roast, boil/simmer with shallots, garlic, thyme for 5 hours. Fantastic.

Lisa Kav

French onion soup is heavily dependent on using good broth. Do yourself a favor and make it. Great recipe.

kathoco

I live in France. When we make this (it’s a go-to when we don’t have a lot of groceries in the house), we toast the bread in a toaster and break it up into pieces in the bowl and then add the cheese. Then pour the soup over it. It’s easier to eat and make and tastes good. In a restaurant you’ll get it with the broiler method.

Isabel

Took another commenter’s advice to tear the bread into croutons and toast them in butter first, which was perfect. Also added a pinch more salt and doubled the sherry. Great, classic soupe à l’oignon.

Debbie

I have made this soup many times. I follow the recipe as is, and the result is marvelous. The important thing to bring to this recipe is patience - it takes a long time to caramelize the onions. Rushing that process results in either burned onions or under done onions. BTW, I’ve used homemade stock and store bought stock, and I can’t really tell the difference. So, if you only have time for store bought stock, don’t fret; the end result will be wonderful.

Jaye C

French onion soup doesn’t have a lot of ingredients, but this is by far my favorite French onion soup recipe ever. Don’t change anything! Perfect as is!

Jaye C

French onion soup doesn’t have a lot of ingredients, but this is by far my most favorite recipe that I’ve ever tried. Don’t change anything! Perfect as is.

EMB

This recipe is fabulous, and so easy. I measured the onions as I sliced, and three pounds was perfect. Doing the bread and cheese in the toaster oven means the soup isn’t too hot to eat right away.

JRC

Outstanding! Took me back 50 years to my first meal in Paris as an exchange student. Only changed I made was to rub a slice of sourdough toast with garlic, top with cheese, and put in the bottom of the soup bowl (per Jacques Pepin); then added the soup, topped with more cheese, and baked in the air fryer at 375 for 15 minutes. The toast at the bottom thickens the soup wonderfully for a hearty gourmet meal. Definitely use good (preferably homemade) stock and quality cheese.

Deb

Oh my goodness, this rivals any restaurant French onion soup. I think homemade beef broth is a must, which is a 2-day project and a fair financial investment (gone are the days when you could get free soup bones from the butcher). I did use 6 cups broth instead of 8, which many posters suggested. I do not have broiler-safe bowls so I made large croutons from a baguette, grated some Gruyère over them and broiled until the cheese melted, then transferred them to the soup bowls. A memorable meal.

lynn

Made this with homemade beef bone broth and only white wine (no sherry). Used a mix of Parmesan and Gruyère and cut toasted baguette into hearts. My honey and I were transported to Paris!

kathy Flores

towards the end add a little sugar to the onions to help carmelize them

Craig Burdick

Be patient with the onions. The soup rivals anything at a steakhouse.

Beaner's Mom

Definitely follow the readers' advice to double the onions-although it took over an hour to properly caramelize them, but so worth it. Also recommend the reader recommendation to cut the bread into cubes and then toast in melted butter. MUCH easier than trying to cut into a slice of bread. I've made this with Appenzeller cheese and actually prefer it to gruyere or Emmentaler.

Beaner's Mom

Easiest way to avoid tears while slicing all those onions is to do so under your exhaust fan over the cooktop or range. If you got decent draw, its a breeze-

Quick And Easy

I halved the broth for a thicker soup and it was delicious. Gruyere is a must. Someone suggested toasting the bread first and they were right.

Barb

I followed the recipe to the letter - with exception of using only 5 cups broth and a little bit more sherry at the end. The results were outstanding - so much flavor!!! I utilized some of the great suggestions when slicing the onions - (1) I sharpened my knife before hand; (2) I held a matchbook match between my teeth for each onion; (3) Kept a wet cloth next to the cutting board. Note I also wear glasses - these 3 things in combo - worked perfectly - no tears!!! The

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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 is the best wine for French onion soup? ›

Use Dry White Wine

I have tried several different wines for this recipe and I find dry white wine to be the best.

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.

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.

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.

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.

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.

What ethnicity is French onion soup? ›

The classic French onion soup gets its name from its country of origin: France. After making its debut in the 18th century, it has become a national treasure. During ancient times (and still today), onions were cheap and easy to grow, and hence, readily available.

Why does my French onion soup taste bitter? ›

Burned onions – result in bitter soup. Be careful to not burn the onions/cook them until they are too dark in color – you don't really need to cook them until they are dark brown – golden brown/light brown is enough.

Why do you put lemon juice in soup? ›

Always Add An Acid To Your Soups

Lemon is arguably even more essential in richer soups like wild mushroom and rice, curried split pea, or even white bean and bacon. This is because the delicate balance of flavor profiles requires that acidic, lemony zing to cut through the fats in the soup.

What if French onion soup is too sweet? ›

If the soup is too sweet, add some vinegar. If you would like a little more depth, add a splash of red wine. I like the onion-to-liquid ratio with 6 cups of water. But if you'd prefer a slightly more delicate soup, add an additional 1 cup/240 milliliters water or to taste.

How can I increase the flavor of French onion soup? ›

Fresh or dried herbs can also help elevate your French onion soup, with bay leaves, sage, and thyme all being typical additions. You may also want to add a smidgen of salt if the soup is too bland or even some sugar to better simulate the caramelized quality that those canned onions probably lack.

What bowls are best 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 is a good substitute for cheese in French onion soup? ›

Key Ingredients & Substitutions

Cheese: To me, there is no better cheese in a French onion soup than Gruyere! However, shredded Swiss or provolone also works very well. Just be sure to find something that is easily shredded or grated, as that's what will give you that amazing gooey, melty cheese we all love.

What are the ingredients in Campbell's French onion soup? ›

INGREDIENTS: ONIONS, WATER, SHERRY WINE, ROASTED ONIONS, CONTAINS LESS THAN 2% OF: BALSAMIC VINEGAR, SALT, BEEF STOCK, POTATO STARCH, BUTTER (CREAM [MILK], SALT), BROWN SUGAR (SUGAR, INVERT SUGAR, MOLASSES), FLAVORING, SPICE.

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

The two soups are very similar, yet quite different. Both make use of slowly cooked, caramelized onions. However, the French version always uses beef stock, baguette, and Swiss or Gruyere cheese. The English version uses any type of stock (beef, chicken, or vegetable) with any sturdy bread and Cheddar cheese.

Why is French onion soup brown? ›

Caramelizing is a chemical process that occurs when the sugars in the onions reach a certain temperature. This only happens after a long cooking time (the addition of a little extra sugar will help). The more caramelized, the deeper the color of the onions and the more flavor you'll get from them.

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.

How do you get depth of flavor in 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. The choice of ingredient depends on the recipe, though.

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 I make my French onion soup darker? ›

The caramelized onions are what give the soup its rich dark flavor and color, so don't skimp! Use a good quality beef broth. We use Better Than Bouillon to make our beef broth because it's extremely flavorful and contains a decent amount of salt, which seasons the soup well.

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