Real French Onion Soup

Treat your taste buds to the comforting embrace of Real French Onion Soup, a timeless classic brimming with rich, caramelized onions, a velvety beef broth, and a perfect balance of earthy thyme and fragrant bay leaf. This recipe captures the essence of authentic French cuisine with its slow-cooked onions, deglazed with dry white wine, and topped with golden, bubbly Gruyère cheese melted over crisp baguette slices. Whether you’re seeking the ultimate cozy lunch or a stunning starter, this recipe promises deep, savory flavors with every spoonful. Easy to make and utterly satisfying, this soup transforms humble ingredients into a gourmet masterpiece—ideal for a chilly evening or an elegant dinner gathering.

Nutriscore Rating: 64/100

Prep Time:15 mins

Cook Time:90 mins

Total Time:105 mins

Servings: 6

Ingredients

• 3 tablespoons unsalted butter
• 2 tablespoons olive oil
• 6 large yellow onions, thinly sliced
• 1 teaspoon granulated sugar
• 2 tablespoons all-purpose flour
• 1 cup dry white wine
• 8 cups beef stock or broth
• 2 fresh thyme sprigs
• 1 bay leaf
• 1 baguette, sliced
• 2 cups grated Gruyère cheese
• 0 to taste salt
• 0 to taste black pepper

Directions

Step 1

In a large heavy-bottomed pot or Dutch oven, melt the butter with the olive oil over medium heat.

Step 2

Add the thinly sliced onions and a pinch of salt. Cook, stirring occasionally, for 15-20 minutes until the onions become soft and translucent.

Step 3

Sprinkle the granulated sugar over the onions and stir. Lower the heat to medium-low and continue to cook, stirring frequently, for an additional 30-40 minutes until the onions are deeply caramelized and golden brown without burning.

Step 4

Stir in the flour and cook for 1-2 minutes, allowing it to absorb any liquid and coat the onions.

Step 5

Slowly add the dry white wine while stirring to deglaze the pot, scraping up any browned bits from the bottom.

Step 6

Pour in the beef stock and add the fresh thyme sprigs and bay leaf. Bring the mixture to a boil, then reduce the heat to low and simmer for 30 minutes. Season with salt and pepper to taste.

Step 7

While the soup simmers, preheat the oven to 400°F (200°C). Arrange the baguette slices on a baking sheet and toast them in the oven for 10-12 minutes, flipping halfway through, until lightly golden and crisp.

Step 8

Turn the oven to broil. Ladle the hot soup into oven-safe bowls. Place a toasted baguette slice on top of each bowl and sprinkle generously with grated Gruyère cheese.

Step 9

Place the bowls on a baking sheet and broil for 2-3 minutes, or until the cheese is melted, bubbly, and lightly browned. Watch carefully to avoid burning.

Step 10

Carefully remove the bowls from the oven and let cool for a minute before serving. Enjoy your authentic French Onion Soup!

Nutrition Facts

Serving size	3210.1 grams (3210.1g)

Amount per serving	% Daily Value*
Calories	2341

Total Fat 147.50g	189%
Saturated Fat 76.90g	385%
Polyunsaturated Fat 2.70g
Cholesterol 333mg	111%
Sodium 11159mg	485%
Total Carbohydrate 155.60g	57%
Dietary Fiber 17.70g	63%
Total Sugars 47.70g
Protein 105.00g	210%

Vitamin D 48IU	240%
Calcium 2329mg	179%
Iron 8mg	45%
Potassium 2634mg	56%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 56.0%

Protein: 17.7%

Carbs: 26.3%