Classic French Onion Soup Gratin
A comforting and hearty soup that captures the essence of French cuisine. Caramelized onions melt delicately into a rich broth, topped with a golden crust of toasted bread and melted cheese. Perfect for winter evenings.
🛒 Ingredients
4 servings
- 1.75 lbs yellow onions
- 3.5 tbsp butter
- 4 cups vegetable or chicken broth
- 2 slices whole wheat bread
- 5.3 oz Gruyère cheese, grated
- 1 white onion
- Salt and pepper
- 1 tsp dried thyme
- 1 bay leaf
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Watch on TikTokDirections
- 1
Peel and thinly slice the yellow onions.
- 2
Melt the butter in a Dutch oven over medium heat. Add the sliced onions and cook for 15 minutes, stirring regularly, until lightly caramelized.
- 3
Pour in the hot broth, add the thyme and the bay leaf. Let simmer covered for 20 minutes.
- 4
Pour the soup into oven-safe bowls. Place a slice of bread on top of each bowl.
- 5
Cover generously with the grated Gruyère cheese.
- 6
Bake at 356°F for 10-12 minutes until the cheese is golden and crispy.
- 7
Remove from the oven, let cool for 2 minutes, and serve immediately.
💡 Chef's Tip
The secret is to caramelize the onions well to develop the flavors. Don't hesitate to add a splash of dry white wine before the broth for more depth. You can also prepare the soup the day before and broil the cheese just before serving.
