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Julia Child’s French Onion Soup Recipe (With a Genius Serving Tip)

Julia Child’s French onion soup recipe is a classic, but I have made one tiny change which I think makes the eating and enjoying of the soup much easier. Sorry Julia, but I would guess, even she would approve!

French onion soup Julia Child style

I recently went to Santa Barbara and had lunch with my mother and daughter at a lovely little French restaurant on State Street.

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I ordered the French onion soup, which I haven’t had or made in a long time, and it made me think how deplorable that was. I adore French onion soup and everything about it: the beefy broth, the glorious caramelized onions, and of course, the incredibly tasty, melty Gruyère cheese on the crispy, crusty, soup-soaked bread! What’s not to love?

text box with quote: As good as the best restaurants! "Wonderful and full of flavor. Thank you so much."-Doug

French onion soup Julia Child style

So as I often do, when I came home, it went on the “to-make” list. And I made it. And it was awesome.

Love onions? Try this delicious caramelized onion, pancetta and feta cheese tart!

caramelized onion, feta and pancetta tart

As the title suggests, Julia Child’s French onion soup isn’t a recipe I followed to the letter. Although Julia claims if you don’t use homemade beef stock, you may as well buy onion soup, I say you’re still better off making the soup at home. Just use whatever stock you have on hand, as long as it’s good quality.

Homemade (red lentil) soup is never a bad idea.

Scottish Red Lentil Soup in a red bowl

The Problem with French Onion Soup

If you’re like me, you probably don’t like fighting with full-sized pieces of  bread covered in melted cheese floating in your soup, right? So I suggest bite-sized toasted pieces of bread instead–they are much more manageable.

Another classic French dish: gratin dauphinois (potatoes au gratin)

gratin dauphinois with lamb

How do you make Julia Child’s French Onion Soup?

This is not a five minute soup, so just be prepared to caramelize some onions for a good 45 minutes or so. The rest of the soup making process is easy, and the result is truly worth the time and effort. See the ingredient list and step by step directions below.

making French onion soup Julia Child style

How to Make Julia Child’s French Onion Soup
with Step by Step Directions (Almost Like Julia’s)

adapted from Mastering the Art of French Cooking by Julia Child

serves 6-8      FULL PRINTABLE RECIPE BELOW

Ingredients

  • yellow onions
  • butter
  • olive oil
  • Kosher salt or sea salt
  • sugar
  • flour
  • beef stock (or water with beef bouillon)
  • dry white wine
  • cognac or brandy (optional)
  • French, Italian or rustic loaf bread
  • Gruyere cheese

Special equipment: oven safe bowls (I found some inexpensive ones at Home Goods which were made in Italy, however, these are the only bowls I found on Amazon that weren’t made in China).

Caramelize the Onions

In a large, heavy bottomed Dutch oven (☚ this is the one I have), add the butter and oil, then the sliced onions. Cook slowly, with the lid on, for about 15 minutes. Stir occasionally.


making French onion soup Julia Child style

Remove the lid, turn the heat up to medium, add the salt and sugar, and stir often for about 40 minutes (mine took 45), until the onions are a deep golden brown. If anyone tells you that you can caramelize onions in 15 minutes, they don’t know anything about caramelizing onions.

caramelizing onions in a pot

Finish Making the French Onion Soup

Next, add the flour and continue to cook and stir for another 3 or 4 minutes.

adding flour to caramelized onions

Remove from heat and add the stock/water/bouillon and wine.

caramelized onions in a pot with alcohol

Add salt and pepper to taste and return to the cooktop, and simmer for an additional 30 to 40 minutes. Just before the soup is ready, preheat the oven to 350 degrees F.

Prepare the Soup for Serving (Genius Serving Tip)

When the soup is ready, add the brandy/Cognac, if using and check for seasoning; ladle it into ovenproof bowls. Instead of placing an entire slice of bread on top of the soup, I like to top it with the cubes of toasted bread so it’s SO much easier to eat!

adding bread cubes to soup

Now, don’t go and ruin this lovely French onion soup by using poor quality cheese! Use the best, real Gruyere from Switzerland, please. Julia and I agree on this one! However, if you can’t find proper Gruyere, or can’t afford it, you can substitute Swiss cheese, but even better, try Jarlsberg.

Le Gruyere cheese

Sprinkle the cheese on top of the toast, as desired. I like everything in moderation (the cheese on the bowl in the photo above, from the restaurant in Santa Barbara was a bit too much for me) so this might be a wimpy amount of cheese for you; if so, add more.

French onion soup Julia Child style

Repeat to make 6 bowls, then place them on a tray and put into the center of the oven for about 15 minutes.

Melt the Gruyère Cheese on top of the Soup

Finally, reset the oven to broil (grill) and move the tray of bowls closer to the top to get a nice golden color on the cheese, which should be watched carefully as it can burn quickly.

Serve immediately and enjoy!

French onion soup Julia Child style
French onion soup Julia Child style

As I said, French onion soup made Julia Child style is well worth the effort!

French onion soup Julia Child style

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Why not make some profiteroles for dessert?

profiteroles on a plate

The recipe for Julia Child’s French Onion Soup can be printed here~

French Onion Soup ~ the way Julia made it, sort of...

Servings: 6
Prep Time: 10 minutes
Cook Time: 1 hour 30 minutes
Total Time: 1 hour 40 minutes
Julia Child's recipe for French Onion Soup with a couple of itty-bitty change from me :)
4.9 from 92 votes

Special Equipment

  • 1 heavy bottomed Dutch oven

Ingredients

  • 3 Tbsp butter
  • 1 Tbsp olive oil
  • 5 cups yellow onions (thinly sliced, do not use sweet onions)
  • 1 tsp Kosher salt (added to the onions in the pot)
  • ¼ tsp sugar (added to the onions in the pot)
  • 3 Tbsp flour
  • 2 quarts beef stock (or water with beef Better Than Bouillon)
  • 4 oz dry white wine
  • ½ tsp Kosher salt (to taste)
  • tsp pepper (to taste)
  • 1 Tbsp Cognac (or brandy- optional, Julia's recipe has 3 Tbsp, but I prefer less)
  • French bread (Italian or rustic bread, cut into bite sized cubes, toasted or croutons)
  • 1 ½ cups Swiss Gruyere (grated - if you can't find it, use Swiss cheese or even better, Jarlsberg)

Instructions

  • In a large, heavy-bottomed Dutch oven, add the butter and oil, then the sliced onions. Cook slowly, with the lid on, for about 15 minutes. Stir occasionally.
  • Remove the lid, turn the heat up to medium, add the salt and sugar, and stir often for about 40 minutes (mine took 45 min), until the onions are a deep golden brown.
  • Add the flour and continue to cook and stir for another 3 or 4 minutes. Remove from heat and add the stock/water/bouillon and wine.
  • Add salt and pepper to taste and return to the cooktop, and simmer for an additional 30 to 40 minutes. Just before the soup is ready, preheat the oven to 350℉/ 175℃.
  • When the soup is ready, add the brandy/Cognac, if using and check for seasoning; ladle it into ovenproof bowls, and GENIUS SERVING TIP - top with the cubes of toasted bread - not an entire slice. It's so much easier to eat this way!
  • Sprinkle the cheese on top of the toast, as desired.
  • Repeat to make 6 bowls, then place them on a tray and put into the center of the oven for about 15 minutes.
  • Reset the oven to broil (grill) and move the tray of bowls closer to the top to get a nice golden color on the cheese, which should be watched carefully as it can burn quickly.
  • Serve immediately.

Notes

  • The results of this soup really depend on the quality of ingredients, most importantly, the cheese and bread. Try to find Gruyère from Switzerland, if possible.

Nutrition

Serving: 1 bowl | Calories: 482kcal | Carbohydrates: 48g | Protein: 24g | Fat: 20g | Saturated Fat: 11g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 7g | Trans Fat: 0.2g | Cholesterol: 51mg | Sodium: 1814mg | Potassium: 887mg | Fiber: 4g | Sugar: 10g | Vitamin A: 491IU | Vitamin C: 10mg | Calcium: 421mg | Iron: 4mg

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Julia Child’s French Onion Soup Recipe

4.87 from 92 votes (88 ratings without comment)

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91 Comments

  1. I just wanted you to know that I made this delicious soup yesterday and my husband said it was the best french onion soup he’s ever had! He is very picky about his onion soup as well ;) Thank you for this recipe! Think I will try to add the 3 tbsp of cognac next time instead of one and see if it makes any difference.

    1. That’s great, Amber! I can’t take credit for the recipe, though as it’s all Julia’s (except for the smaller bread cube idea)! :) So happy you got such rave reviews from your husband!

  2. OMG Christina!!! You made me look sooooo good AGAIN! I made this soup for dinner this evening and my husband was very very impressed!! He is a very happy man I must tell you! The soup turned out fabulous! I can’t even believe I was able to produce something so good! It was delicious!! I used the Gruyere cheese that you recommended and I also used beef broth (and added a beef cube on top of it as I like it stronger). It turned out perfect!!! This recipe is a keeper! Thank you so much!!!

    1. Oh that makes me soooo happy, Adrianna! I love to hear it and so glad you love the recipe, but Julia has to take the credit on this one; she was an amazing chef, for sure. :) CC

    2. Adriana, have you ever tried ” BETTER THAN BULLION” instead of bullion cubes. Comes in chicken, beef, veggie, garlic flavors. It’s wonderful. Salty like bullion but so much better. Use it in soups, chili, pot pie, shepards .pie many things. I use just a tad in my onion soup as well. Pipi

  3. Your soup looks positively divine! I thought the amount of cheese you used on top was perfect. I become suspect when I order FOS in a restaurant and the cheese is dripping over the sides and spreading across the under-plate like so much lava. I often wonder what it is they are trying to hide by overwhelming me with cheese. Yours is perfect!

    1. Haha, Shane! Yes, that’s a good analogy with the volcano erupting. I think too many foods are “overdone” in the US, for example, the amount of toppings and cheese on most pizzas boggles my mind. Glad you like my version of FOS! :)

  4. thanks for the memories – have made in a while – hubby took me to a little French bistro in the Georgetown area of DC when we first met for my first French Onion Soup and I fell in love. He will be thrilled with this. Thanks

  5. Just made this tonight, followed your recipe exactly, and without question its the best french onion soup ive made. Have made french onion soup using other recipes (crockpot)….nothing compares to this…..keys are a heavy pot (fontignac is what i have), slow low cook, and of course vermouth and brandy. My dear dad loves french onion soup, so i am very glad for this recipe. Thank you !!!

    1. Thank you so much for taking the time to let me know how much you liked the soup, Susie! Love to hear it, and am so glad you’ll be making it for your dad as I’m sure he’ll enjoy it as much as you do! :) CC

  6. Christina – i have a similar recipe (not julia either) i’ve used for years – the bite-sized croutons are a marvelous idea – now you’ve made me want good onion soup! i have not ordered in a restaurant in… well the same years… because as you said, once you’ve made it yourself the ones “out” just don’t cut it. I look forward to trying your recipe as well (although i am partial to the one i have – sorry) – thanks for inspiring people to MAKE THIS SOUP!