Bistro Onion Soup

Experience the comforting warmth of Bistro Onion Soup, a classic French-inspired dish that brings elegance to your table. This rich and savory soup is crafted with deeply caramelized yellow onions, a splash of dry white wine, and a robust beef broth, all simmered to perfection with aromatic thyme and a delicate bay leaf. Topped with crispy baguette slices and a blanket of melted, golden-bubbly Gruyère cheese, this soul-soothing recipe transforms simple ingredients into a gourmet masterpiece. Perfect for cozy nights or sophisticated dinners, this French onion soup recipe is easy to follow and delivers restaurant-quality results right at home.

Nutriscore Rating: 64/100

Prep Time:15 mins

Cook Time:60 mins

Total Time:75 mins

Servings: 4

Ingredients

• 3 tablespoons unsalted butter
• 2 tablespoons olive oil
• 6 large yellow onions
• 1 teaspoon granulated sugar
• 2 cloves garlic cloves, minced
• 1 cup dry white wine
• 6 cups beef broth
• 1 leaf bay leaf
• 2 teaspoons fresh thyme, leaves stripped
• 1 teaspoon salt
• 0.5 teaspoon black pepper
• 8 pieces baguette slices
• 2 cups Gruyère cheese, grated

Directions

Step 1

Melt the butter with the olive oil in a large heavy-bottomed pot over medium heat.

Step 2

Peel and thinly slice the yellow onions. Add them to the pot and stir occasionally for 10 minutes until they soften.

Step 3

Sprinkle the sugar over the onions and reduce the heat to low. Continue cooking for 30–35 minutes, stirring occasionally, until the onions are deeply caramelized and golden brown.

Step 4

Stir in the minced garlic and cook for 1 minute, until fragrant.

Step 5

Increase the heat to medium and pour in the dry white wine. Deglaze the pot by scraping up any browned bits stuck to the bottom. Let it simmer for about 5 minutes, until the wine has mostly reduced.

Step 6

Add the beef broth, bay leaf, thyme, salt, and black pepper to the pot. Stir to combine and bring the mixture to a gentle simmer.

Step 7

Allow the soup to simmer, uncovered, for 20 minutes. Discard the bay leaf before serving.

Step 8

Preheat your oven to 400°F (200°C). Toast the baguette slices on a baking sheet for 5–7 minutes, until crisp and lightly golden.

Step 9

Ladle the soup into oven-safe bowls, leaving a bit of room at the top. Place a baguette slice on top of each bowl of soup and sprinkle generously with grated Gruyère cheese.

Step 10

Place the bowls onto a baking sheet and transfer to the oven. Bake for 8–10 minutes, or until the cheese is melted, bubbly, and slightly golden.

Step 11

Carefully remove the baking sheet from the oven. Let the soup cool slightly before serving.

Nutrition Facts

Serving size	2892.3 grams (2892.3g)

Amount per serving	% Daily Value*
Calories	2608

Total Fat 142.90g	183%
Saturated Fat 70.00g	350%
Polyunsaturated Fat 2.80g
Cholesterol 292mg	97%
Sodium 10877mg	473%
Total Carbohydrate 219.90g	80%
Dietary Fiber 23.60g	84%
Total Sugars 44.00g
Protein 114.90g	230%

Vitamin D 13IU	67%
Calcium 2636mg	203%
Iron 14mg	76%
Potassium 2604mg	55%

*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: 49.0%

Protein: 17.5%

Carbs: 33.5%