French Onion Soup Recipe (VIDEO) (2024)

Pulling up a spoonful of caramelized French Onion Soup in a rich broth with crisp cheesy toast is something we can’t get enough of. Whether you’re a beginner or a pro, you will be impressed with the results. Watch the video tutorial and see how easy it is to re-create this restaurant-quality French onion soup at home.

We love warm, comforting soup recipes from Tomato Soup to hearty Beef Stew and our famous Zuppa Toscana. If you are a soup lover, this French Onion Soup is a must-try!

French Onion Soup Recipe (VIDEO) (1)

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The Best French Onion Soup Recipe

I’m convinced this truly is the best recipe for homemade French Onion Soup. We have been perfecting this recipe for years (I am a major fan). After trying so many different versions at some of the best restaurants, this one is truly excellent. Here’s why you’ll love this recipe:

  • Quicker cooking time – our tip for adding sugar cuts down the onion caramelization time significantly. When you caramelize onions on the stove, the heat draws out their natural sugars so adding just a little extra sugar will make the process go faster and develops a sweeter and more caramelized onion.
  • Make-ahead – you can make this ahead and impress your guests with gooey, cheesy topped soup without ‘sweating’ over the onions (some pun intended). It tastes even better as the flavors meld.
  • We got the flavors right – this recipe has the perfect balance of sweet and savory. You’d be surprised how many recipes don’t specify the correct onions and Sherry, which can make or break your French Onion Soup.

French Onion Soup Video

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What is French Onion Soup?

French Onion Soup is made of caramelized onions in a rich beef-Sherry broth and is served with a signature cheesy toast topping. It originated in France which is why it’s called French Onion Soup and it has become one of the most iconic French soups. Just like our Ukrainian Borscht, it is timeless and well-loved.

This soup is often on the menu in high-end restaurants, but it’s simple to re-create at home. Just imagine you’re in Paris as you enjoy every bite.

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Ingredients

The ingredients for French Onion Soup are simple, so quality ingredients are essential. A high-quality beef broth, gruyere cheese and fresh thyme will elevate your soup.

  • Onions – use yellow onions for the perfect balance of sweet and savory.
  • Sugar – just 1/2 teaspoon helps to speed up the caramelization process.
  • Garlic, bay leaf, and thyme – these aromatics, plus salt and pepper are all you need for flavor.
  • Beef Stock – using beef stock or broth will give you better taste and color versus chicken or vegetable stock.
  • Dry Sherry – be sure to pick a dry sherry wine so your soup doesn’t end up too sweet.
  • Baguette and Gruyere cheese – these two are combined to make the cheesy toast topping. Gruyere is the classic choice for this soup, but I did include some substitution options in the “common questions” section below.
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The Best Onions for French Onion Soup:

  • Yellow onions are considered cooking onions and will work best for caramelizing with the perfect balance of sweet and savory flavor. We highly recommend yellow onions for French Onion Soup.
  • Sweet onions have 25% more sugar than yellow onions and will result in a sweeter soup. If using, be sure to use extra-dry sherry
  • White onions should be avoided since they taste flat when caramelized. Save them for guacamole.
  • Red onions can turn blueish with lengthy cooking.

Pro Tip for Slicing Onions: Thinly slice your onions parallel with the lines on the onion (from root to stem). It will look nicer in the soup and you’ll break less of the onion cells which release the onion vapors that make you cry. This means fewer tears while cutting onions.

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How to Make French Onion Soup

The key to making great French Onion soup is in giving the onions time to caramelize properly. Don’t rush this process but we do have a secret (just a bit of sugar) to cut down the time significantly.

  1. Slice Onions – peel onions and thinly slice onions.
  2. Soften Onions – let the onions ‘sweat’ and soften for 10 minutes.
  3. Caramelize Onions – Add 1/2 tsp sugar to speed up the caramelization process. Sautee over medium heat until onions have browned (40 min).
  4. Add Garlic and saute for 1 minute until fragrant.
  5. Add Dry Sherry and cook down until all the wine has evaporated, scraping the bottom to deglaze the pan.
  6. Add beef stock along with aromatics (bay leaf and thyme), salt, and pepper. Simmer partially covered 30 minutes.
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Common Questions:

Can I substitute the gruyere cheese?

Gruyere is the classic choice because it’s mild in flavor and melts beautifully. You could substitute with swiss cheese, provolone, fontina, or a blend of mozzarella (low-moisture part-skim) and parmesan.

Can I make French Onion Soup in a slow cooker?

You can finish the soup in a slow cooker, but we recommend first caramelizing the onions and reducing the sherry wine on the stovetop through step 5. In step 6, transfer to a slow cooker, add broth and seasonings and cook covered on low heat for 6 hours then season to taste.

Can I substitute the sherry wine?

Dry sherry is traditional for making French Onion Soup, but you can substitute it with a dry white wine such as vermouth. Also, keep in mind since the sherry is reduced, you essentially cook out most of the alcohol in the recipe.

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How to Serve French Onion Soup (2 Ways)

The way you serve your soup will depend on whether or not you have broiler-safe bowls. If they aren’t broiler safe, the dishes can crack and create a mess in your oven. Whether you have high-heat safe bowls or not, both of these methods will produce delicious results.

With broiler-safe serving bowls:

  1. Toast bread slices on a baking sheet.
  2. Ladle soup into bowls and sprinkle the tops with cheese.
  3. Top with toasted bread then cover with more cheese.
  4. Broil for 2-3 minutes until the cheese is melted.
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Without broiler-safe bowls:

  1. To prepare the topping toasts separately, brush toast with olive oil and bake.
  2. Top toasted bread with mounds of cheese and broil for 2-3 minutes.
  3. Ladle soup into warm bowls and sprinkle on cheese to melt.
  4. Place cheesy toasts over the hot soup bowls.
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Make-Ahead:

  • Refrigerate – You can refrigerate French Onion Soup for up to 3 days. Once the soup is done, let it cool then cover and refrigerate until ready to reheat and serve.
  • Freezing – cool the soup then freeze in freezer-safe storage containers or zip bags for up to 3 months. Thaw in the refrigerator overnight before using, or you can speed-thaw your container in cold water.
  • Toasts – the bread toasts can be baked ahead and stored covered at room temperature for a few days since you are essentially making croutons. Add cheese and broil just before serving.
  • To Reheat – transfer the soup to a saucepan and set over medium heat until steaming hot.
French Onion Soup Recipe (VIDEO) (9)

Everyone needs a great French Onion Soup Recipe. The rich flavor and aroma of caramelized onions in a sherry-beef broth under a cheesy toast are irresistible.

More Cozy Soup Recipes

If you love this French Onion Soup, then you won’t want to miss these comforting, classic soup recipes. These are the soups we make on repeat:

  • Vegetable Soup
  • Potato Soup
  • Creamy Chicken Noodle Soup
  • Chicken Tortilla Soup
  • Butternut Squash Soup
  • Chicken and Rice Soup

French Onion Soup Recipe

5 from 121 votes

Author: Natasha Kravchuk

French Onion Soup Recipe (VIDEO) (11)

This classic French Onion Soup has simple ingredients but rich flavor. Be sure to use yellow onions and dry sherry wine to ensure the perfect balance of sweet and savory.

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Prep Time: 10 minutes mins

Cook Time: 1 hour hr 20 minutes mins

Total Time: 1 hour hr 30 minutes mins

Ingredients

Servings: 6 people

  • 2 Tbsp olive oil, plus more to brush toasts
  • 2 Tbsp unsalted butter
  • 3 lbs yellow onions, about 6 large onions, halved, peeled and thinly sliced with the grain
  • 1/2 tsp granulated sugar
  • 2 garlic cloves, minced
  • 1/2 cup dry sherry wine, or use dry vermouth or dry white wine
  • 8 cups beef stock, or broth
  • 1 bay leaf
  • 3 sprigs fresh thyme, plus more to garnish (or 1/4 tsp dried thyme)
  • 1 1/2 tsp salt, or to taste, divided
  • 1/2 tsp black pepper, or to taste
  • 12 slices baguette
  • 8 oz gruyere cheese, 1 1/2 cups shredded, divided

Instructions

How to Make French Onion Soup:

How to Make Crouton Topping:

  • While soup is finishing up, preheat oven to 400˚F. Slice baguette to 1/2” thick slices. Brush both sides lightly with olive oil, arrange on a baking sheet and bake for 6-8 minutes until golden brown at the edges.

  • Once the soup is ready to serve, top the toasts with half of the cheese and broil for 2-3 minutes until the cheese melts and turns golden in spots.

  • Pour soup into warm bowls and sprinkle remaining cheese over the hot soup. Top with hot cheesy toasts then serve.

Nutrition Per Serving

545kcal Calories58g Carbs26g Protein24g Fat11g Saturated Fat52mg Cholesterol1745mg Sodium1024mg Potassium6g Fiber12g Sugar500IU Vitamin A18mg Vitamin C514mg Calcium3mg Iron

  • Full Nutrition Label
  • Nutrition Disclosure

Nutrition Facts

French Onion Soup Recipe

Amount per Serving

Calories

545

% Daily Value*

Fat

24

g

37

%

Saturated Fat

11

g

69

%

Cholesterol

52

mg

17

%

Sodium

1745

mg

76

%

Potassium

1024

mg

29

%

Carbohydrates

58

g

19

%

Fiber

6

g

25

%

Sugar

12

g

13

%

Protein

26

g

52

%

Vitamin A

500

IU

10

%

Vitamin C

18

mg

22

%

Calcium

514

mg

51

%

Iron

3

mg

17

%

* Percent Daily Values are based on a 2000 calorie diet.

Course: Soup

Cuisine: French

Keyword: french onion soup, how to make French onion soup

Skill Level: Medium

Cost to Make: $

Calories: 545

Natasha Kravchuk

French Onion Soup Recipe (VIDEO) (12)

Welcome to my kitchen! I am Natasha, the blogger behind Natasha's Kitchen (since 2009). My husband and I run this blog together and share only our best, family approved and tested recipes with YOU. Thanks for stopping by! We are so happy you're here.

Read more posts by Natasha

French Onion Soup Recipe (VIDEO) (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.

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 you caramelize onions for French onion soup? ›

The key to good French onion soup is to cook the onions so long that they threaten to melt into a viscous, dark brown paste, à la Marmite. As has already been extensively reported in Slate, there are no shortcuts when you're caramelizing onions; it always takes at least an hour, usually longer.

Why do you add flour to French onion soup? ›

Flour: a little all-purpose flour will help to thicken the soup. You can feel free to use gluten-free flour. Dry white wine: this helps to deglaze the pan and add a boost of flavor.

Why does my French onion soup taste burnt? ›

If the heat is too high, the onions will burn. If you don't stir often at beginning and almost constantly toward the end, the onions will burn. If one little bit burns the whole batch needs to be tossed. Otherwise the soup ends up tasting like burnt onion.

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.

Does it matter how you cut onions for French onion soup? ›

For French onion soup, it is best to slice the onions into thin, even slices. This will allow them to cook evenly and caramelize properly. You can achieve this by cutting the onion in half, placing the flat side down, and slicing it widthwise into thin slices.

Why is my French onion soup too sweet? ›

Onions are very sweet, especially when they're cooked down, and that is the main purpose of onion soup. The sweetness can be balanced by adding some dry wine or vinegar. Taste as you go and don't overdo it. A little salt will balance it too, but don't forget that the grated cheese you will top it with is salty.

What is the best wine to use in 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.

Why do you put lemon juice in soup? ›

But as the publication explains, lemon juice adds more than just tartness. For chicken soup in particular, lemon juice balances out the more rich and savory flavors, adding an overall brightness to the taste.

Why is my French onion soup sour? ›

It might be because of the stock or that you used onions that has sour flavor such as white onions.

What is the etiquette for eating French onion soup? ›

I fear it's gauche to use a knife, but how am I supposed to cope with the thick layer of cheese on top? With such a soup, a knife is your friend, not your enemy. Using both the soup spoon and the knife, push the baked cheese against the rim of the cup or bowl and cut it gently with the knife.

Can I use chicken broth instead of beef broth in French onion soup? ›

It is better to use chicken or vegetable broth rather than sub-standard beef broth. Best to use low salt and add salt if required. 4. Bread - The idea with the recipe is that you can use a spoon to cut through the bread into the soup to eat it (see video).

Why are my onions not browning for French onion soup? ›

A few reasons could be that you sliced them too thick or too thin. You haven't cooked them long enough. Your heat isn't at the right temp, use between medium and medium-low.

How do you make soup taste stronger? ›

Use fresh vegetables, high-quality meats or broth, and fresh herbs to add depth of flavor. Add acidity: A squeeze of lemon or lime juice, a dash of vinegar, or a splash of wine can brighten the flavors of a soup and make it taste more complex.

What spices add depth to soup? ›

Herbs and sources add flavor, aroma, and intensity to the soup broth. You can pick fresh or dried herbs like basil for tomato-based soups or fresh parsley for clear broths. You may also add more spices like turmeric, ground ginger, ground paprika, or nutmeg for a touch of spice and color to your soup broth.

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

A squeeze of citrus, a dollop of yogurt or a drizzle of cream, a dusting of cheese or a good chile powder, a sprinkling of some herbs or croutons — all can take a perfectly fine soup into the realm of the delectable. Even a spiral of good olive oil to finish and some coarse sea salt can do wonders.

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