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Description
A traditional French onion soup topped with crispy Gruyère cheese croutons.
Ingredients
- 4 large yellow onions, thinly sliced
- 4 tbsp unsalted butter
- 2 tbsp olive oil
- 1 tsp sugar
- 1 tsp salt
- 4 cups beef broth
- 2 cups chicken broth
- 1/2 cup dry white wine
- 2 tbsp all-purpose flour
- 1 bay leaf
- 1/2 tsp dried thyme
- 1 baguette, sliced
- 1 1/2 cups Gruyère cheese, grated
Instructions
- Melt butter with olive oil in a large pot over medium heat.
- Add onions, sugar, and salt. Cook until caramelized, about 30 minutes.
- Sprinkle flour over onions and stir for 1 minute.
- Add white wine, beef broth, chicken broth, bay leaf, and thyme. Simmer for 30 minutes.
- Preheat oven to 400°F. Toast baguette slices for 5 minutes.
- Ladle soup into oven-safe bowls, top with toasted bread and Gruyère cheese.
- Broil until cheese is bubbly and golden, about 3 minutes.
Notes
- Use freshly grated Gruyère for best melting.
- Caramelize onions slowly for deeper flavor.
- Adjust salt based on broth sodium content.
- Prep Time: 15 minutes
- Cook Time: 65 minutes
- Category: Soup
- Method: Stovetop/Broiling
- Cuisine: French