French Onion Soup Recipe

User Reviews

5

221 reviews
Excellent
  • Prep Time

    10 mins

  • Cook Time

    1 hr 20 mins

  • Total Time

    1 hr 30 mins

  • Servings

    6 people

  • Calories

    545 kcal

  • Course

    Soup

  • Cuisine

    French

French Onion Soup Recipe

French Onion Soup features deeply caramelized yellow onions simmered with beef stock, herbs, and dry sherry to develop a richly savory broth. Topped with toasted baguette slices and melted Gruyère cheese, it balances sweet, savory, and slightly nutty flavors. The long caramelization process ensures a silky texture and a complex, layered taste that defines this classic soup.

Description

French Onion Soup Recipe starts with thinly sliced yellow onions cooked in olive oil and butter until deeply caramelized, which takes about 40 minutes. Adding a bit of sugar encourages even browning without burning. Once the onions soften and turn golden, minced garlic is added briefly before deglazing the pan with dry sherry. Beef stock combined with bay leaf and thyme simmers with the onions, melding flavors for 30 minutes. The soup is traditionally served with toasted baguette slices topped with shredded Gruyère cheese, melted to form a savory crust.

The soup offers a rich, sweet, and savory broth with tender onions providing a silky texture. The combination of caramelization and aromatics like thyme and bay leaf results in depth and complexity. Melting Gruyère on toasted baguette slices adds a nutty, creamy note and a satisfying contrast in texture.

This hearty soup can be served as a starter or main course, especially on cooler days. The methodical slow cooking produces the characteristic sweetness and umami, making it a soothing and satisfying dish. The melted cheese and crusty bread topping make it hearty and well-rounded.

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Ingredients

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

Instructions

How to Make French Onion Soup:

  1. Cut onions in half, cut off the ends, then peel and slice onions thinly (cut parallel with the grain of the onion).
  2. In a large heavy-bottomed pot or dutch oven over medium heat, add 2 Tbsp olive oil and 2 Tbsp butter. Add sliced onions and sauté uncovered, stirring occasionally for 10 minutes.
  3. Sprinkle the onions with 1/2 tsp sugar which will help the onions caramelize faster. Sauté uncovered for another 30-40 minutes, stirring occasionally until onions are caramelized and browned. Stir more frequently towards the end to prevent scorching or burning the onions.
  4. Once onions are caramelized, add minced garlic and sauté another minute.
  5. Add 1/2 cup sherry and deglaze the pot by scraping the bottom. Continue stirring until all of the sherry has cooked out (about 3 minutes over medium heat).
  6. Add 8 cups beef stock, 1 bay leaf, thyme and 1 tsp salt. Partially cover and simmer for 30 minutes for the flavors to meld. Add another 1/2 tsp salt and 1/2 tsp black pepper, or season to taste then remove from heat.

How to Make Crouton Topping:

  1. 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.
  2. 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.
  3. Pour soup into warm bowls and sprinkle remaining cheese over the hot soup. Top with hot cheesy toasts then serve.

Nutrition Information

Show Details
Calories 545kcal (27%) Carbs 58g Protein 26g (52%) Fat 24g (37%) Saturated Fat 11g (55%) Cholesterol 52mg (17%) Sodium 1745mg (73%) Potassium 1024mg (22%) Fiber 6g (24%) Sugar 12g (24%) Vitamin A 500IU (10%) Vitamin C 18mg (20%) Calcium 514mg (51%) Iron 3mg (17%)

Nutrition Facts

Serving: 6people

Amount Per Serving

Calories 545 kcal

% Daily Value*

Calories 545kcal 27%
Carbs 58g
Protein 26g 52%
Fat 24g 37%
Saturated Fat 11g 55%
Cholesterol 52mg 17%
Sodium 1745mg 73%
Potassium 1024mg 22%
Fiber 6g 24%
Sugar 12g 24%
Vitamin A 500IU 10%
Vitamin C 18mg 20%
Calcium 514mg 51%
Iron 3mg 17%

* Percent Daily Values are based on a 2,000 calorie diet.

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221 reviews
Excellent

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