French Onion Bouillon Soup

Ingredients

• 4 large onions, thinly sliced 4 large onions, thinly sliced
• 2 tablespoons unsalted butter 2 tablespoons unsalted butter
• 2 tablespoons olive oil 2 tablespoons olive oil
• 4 cups (950ml) beef broth 4 cups (950ml) beef broth
• 1 cup (240ml) dry white wine 1 cup (240ml) dry white wine
• 1 teaspoon sugar 1 teaspoon sugar
• 1 teaspoon thyme leaves 1 teaspoon thyme leaves
• Salt and black pepper to taste Salt and black pepper to taste
• 4 slices of baguette 4 slices of baguette
• 1 cup (100g) Gruyère cheese, grated 1 cup (100g) Gruyère cheese, grated

Nutrition

• Calories (kcal / KJ): 320 kcal / 1340 KJ
• Fat (total, saturated): 18g, 9g
• Carbohydrates (total, sugars): 22g, 10g
• Protein: 14g
• Fiber: 3g
• Salt: 1.5g

Preparation

1. 1.
   In a large pot, melt the butter and olive oil over medium heat.
2. 2.
   Add the sliced onions and cook slowly, stirring occasionally, until they turn golden brown and caramelized, about 30-40 minutes.
3. 3.
   Sprinkle the sugar over the onions and continue cooking for another 5 minutes, stirring occasionally.
4. 4.
   Pour in the white wine and deglaze the pot, scraping any browned bits from the bottom.
5. 5.
   Add the beef broth and thyme leaves to the pot. Season with salt and black pepper to taste.
6. 6.
   Bring the soup to a boil, then reduce the heat and simmer for 20 minutes to allow the flavors to meld together.
7. 7.
   While the soup is simmering, preheat the broiler in your oven.
8. 8.
   Place the baguette slices on a baking sheet and toast them under the broiler until golden brown.
9. 9.
   Ladle the soup into oven-safe bowls. Place a slice of toasted baguette on top of each bowl and sprinkle generously with grated Gruyère cheese.
10. 10.
    Place the bowls under the broiler until the cheese is melted and bubbly, about 2-3 minutes.
11. 11.
    Carefully remove the bowls from the oven and let them cool slightly before serving.

Treat your ingredients with care...

• Onions — Slowly caramelizing the onions over low heat is key to achieving their sweet and rich flavor. Be patient and stir occasionally to prevent burning.
• Gruyère cheese — Opt for high-quality Gruyère cheese for the best flavor and melting properties. If unavailable, you can substitute with Emmental or Swiss cheese.

Tips & Tricks

• For a deeper flavor, you can add a splash of balsamic vinegar to the caramelized onions.
• If you prefer a thicker soup, you can sprinkle a tablespoon of flour over the onions before adding the broth.
• To make the soup vegetarian, substitute the beef broth with vegetable broth and omit the Gruyère cheese.

Serving advice

Serve the French Onion Bouillon Soup hot, straight from the oven. Be cautious as the bowls will be hot. Pair it with a fresh green salad for a complete meal.

Presentation advice

Present the French Onion Bouillon Soup in oven-safe bowls with the melted cheese on top. Garnish with a sprig of fresh thyme for an elegant touch.