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French Onion Soup

This Classic Beef Broth and Gruyere French Onion Soup is the ultimate comfort food, featuring sweet caramelized onions, savory beef broth, and bubbling Gruyere cheese.
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Prep Time 10 minutes
Cook Time 1 hour 10 minutes
Total Time 1 hour 20 minutes
Servings: 6 servings
Course: Appetizer, Soup
Cuisine: French
Calories: 275
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 4 large large onions, thinly sliced Opt for yellow onions for the best flavor.
  • 4 tablespoons butter Unsalted butter recommended.
  • 1 tablespoon olive oil For additional flavor.
  • 1 teaspoon sugar Enhances sweetness of onions.
  • 8 cups beef broth Can substitute with vegetable or chicken broth.
  • 1 cup dry white wine Elevates the soup's flavor.
  • 1 bay leaf bay leaf Adds herbal notes.
  • 2 teaspoons fresh thyme Use 1 teaspoon if dried.
  • to taste Salt and pepper Adjust for flavor.
  • 8 slices French bread Crusty bread for topping.
  • 2 cups grated Gruyere cheese Melts beautifully for topping.

Method
 

Preparation
  1. Melt butter and olive oil together in a large pot over medium heat.
  2. Add the sliced onions and sugar, stirring frequently to caramelize over 30 to 40 minutes.
  3. Once onions are golden brown, stir in beef broth, white wine, bay leaf, thyme, salt, and pepper.
  4. Bring to a boil, then reduce heat and simmer for about 30 minutes.
Assembly
  1. Preheat the broiler.
  2. Ladle the soup into oven-safe bowls, top with a slice of French bread and a generous amount of Gruyere cheese.
  3. Broil until the cheese is bubbly and golden, about a few minutes.
  4. Remove from oven and let cool slightly before serving.

Notes

This soup pairs well with a green salad, baguettes, or a charcuterie board. For best results, allow the soup to simmer sufficiently for flavors to meld together.