Ingredients
Method
Preparation
- Melt the butter and olive oil in a large pot over medium heat. Add the sliced onions, salt, and sugar.
- Stir frequently and cook the onions for about 30-40 minutes until they reach a deep golden brown color.
- Add minced garlic and stir for about 1 minute until fragrant.
- Scrape up any bits stuck to the bottom of the pot. Let it simmer until reduced by half.
- Add the beef broth, thyme, and bay leaf. Bring to a boil, then reduce heat and simmer for about 30 minutes.
- While the soup simmers, slice and toast the French bread until golden. Grate the Gruyère cheese.
- Remove the bay leaf from the soup and ladle it into oven-safe bowls. Top with a slice of toasted bread and sprinkle generously with cheese.
- Broil the bowls until the cheese is melted and bubbly, about 2-3 minutes. Watch closely to prevent burning.
Notes
Choose a combination of yellow and sweet onions for complexity. Use homemade or high-quality broth for the best taste. Don't rush the caramelization of the onions.
