Ingrédients
Préparation
Preparation
- Gather all your ingredients and tools: a large pot, wooden spoon, and oven-safe bowls.
Caramelization
- Heat the pot over medium-low heat, then add the butter and olive oil.
- Once the butter has melted, add the sliced onions and stir to coat.
- Cook slowly for 10 minutes, then sprinkle in the sugar and a pinch of salt.
- Continue cooking for another 30-40 minutes until onions are deep golden brown.
Adding Garlic and Building the Broth
- Add the minced garlic and cook for about one minute until fragrant.
- Pour in the broth along with Worcestershire sauce, thyme, black pepper, remaining salt, and bay leaf.
- Stir well and bring to a gentle simmer, cooking for 20-25 minutes.
Preparing Topping
- Preheat the oven to 375°F (190°C). Arrange baguette slices on a baking sheet.
- Toast the slices for 8-10 minutes until golden and crisp.
Assembling and Broiling
- Ladle the hot soup into oven-safe bowls.
- Place a toasted baguette slice on top of each bowl.
- Sprinkle shredded Gruyère cheese generously over the baguette.
- Broil for 3-5 minutes until the cheese is melted and bubbly.
Serving
- Remove from oven, let cool slightly, and serve warm.
Notes et conservation
For a creamy version, stir in a splash of heavy cream. Avoid rushing the caramelization process for the best flavor.
