3. Simmer the Soup
Add beef broth, thyme, and bay leaf.
Bring to a gentle simmer and cook uncovered for 20–25 minutes.
Season with salt and pepper to taste. Remove the bay leaf before serving.
4. Prepare the Bread and Cheese
While the soup simmers, preheat the oven to 400°F (200°C).
Place baguette slices on a baking sheet and toast until lightly golden, about 5–7 minutes.
Top each slice with grated Gruyère cheese and return to the oven until the cheese melts and bubbles.
5. Serve
Ladle soup into oven-safe bowls or crocks.
Place a cheesy baguette slice on top of each bowl. Optionally, broil for 1–2 minutes to get a golden, bubbly topping. Serve immediately.
💡 Tips for Perfect French Onion Soup
Patience with onions: Slow caramelization is key for deep flavor.
Use good-quality broth: The broth is the base of your soup, so rich flavor is essential.
Gruyère cheese: This cheese melts beautifully and adds authentic flavor; Swiss cheese is a good substitute.
Make ahead: Soup can be prepared a day in advance; reheat and add fresh baguette slices before serving.
🌟 Variations
Vegetarian version: Use vegetable broth instead of beef broth.
Extra herbs: Add rosemary or sage for a twist.
Spicy touch: Add a pinch of cayenne or smoked paprika for depth.
🍽 Serving Suggestions
French Onion Soup is best served as:
A starter for a French-themed dinner
A comforting lunch with a side salad
A cozy winter evening treat
🧊 Storage
Refrigerator: 3–4 days in an airtight container
Reheating: Warm on the stove over low heat; add a splash of broth if too thick
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