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#### 1. Caramelize the Onions
– Begin by heating **butter** and **olive oil** in a large pot over medium heat. Once the butter is melted and the oil is hot, add the **sliced onions**.
– Sprinkle the onions with **sugar**, which will help them caramelize and achieve that rich, golden color.
– Cook the onions, stirring occasionally, for about **25-30 minutes**, or until they are soft and deeply caramelized. Be patient; the longer you cook them, the richer the flavor.
#### 2. Build the Soup Base
– Once the onions are caramelized, add the **beef broth** and **white wine** (if using) to the pot. Stir to combine and bring the mixture to a gentle simmer.
– Add the **thyme**, **bay leaf**, and season with **salt** and **pepper** to taste.
– Let the soup simmer for about **15-20 minutes** to allow the flavors to meld together. If you want a more intense flavor, you can simmer it longer, just be sure to adjust the seasoning as needed.
#### 4. Assemble the Soup
– Once the soup is ready, remove the **bay leaf** and discard it. Ladle the hot soup into oven-safe bowls, filling them about three-quarters full.
– Place the toasted bread slices on top of the soup, then generously sprinkle the **Gruyère** and **Parmesan cheese** over the bread.
#### 5. Broil for a Gooey, Golden Top
– Place the bowls under the broiler for about **2-3 minutes**, or until the cheese is melted, bubbly, and golden brown. Keep an eye on it to avoid burning.
– Once the cheese is perfectly melted and browned, carefully remove the bowls from the oven.
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1. **Caramelize the Onions Well**: The key to great French onion soup is the depth of flavor that comes from caramelized onions. Take your time to cook them down until they’re golden brown and sweet.
2. **Customize the Bread**: While traditional French bread is ideal, you can use any sturdy, crusty bread you like. A baguette, sourdough, or even whole-grain bread will work well.
3. **Use High-Quality Cheese**: Gruyère cheese is the classic choice for French onion soup, but you can mix it with Swiss cheese or even cheddar for a different flavor. The combination of **Gruyère** and **Parmesan** adds both creaminess and a savory kick.
4. **Make It Vegetarian**: Simply swap out the beef broth for vegetable broth to make this soup vegetarian-friendly without losing any flavor.
### Why This Recipe is So Special
**Easy French Onion Soup** is a comforting, satisfying dish that combines the natural sweetness of caramelized onions with savory, rich broth, and melted cheese. The addition of crispy, toasted bread creates a wonderful texture contrast, giving you a perfect bite with each spoonful.
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### Conclusion