Back to RecipesSweet, deeply caramelized onions in a rich beef broth, topped with a crouton and a golden, bubbling gruyère crust. The ultimate French bistro comfort.
Total Time
90 min
Servings
4
Cuisine
French
Rating
No reviews yet
Prep Time
15 min
Cook Time
75 min
Total Time
90 min
Melt butter with olive oil in a large heavy pot over medium heat. Add onions and sugar. Cook, stirring occasionally, for 45-60 minutes until deeply golden and caramelized.
Add garlic and cook 2 minutes. Add wine and scrape up any browned bits. Cook until wine evaporates.
Add broth, thyme, and bay leaf. Simmer 20 minutes. Season with salt and pepper. Remove herbs.
Preheat broiler. Ladle soup into oven-safe bowls placed on a baking sheet.
Place 2 toasted baguette slices on top of each bowl. Pile Gruyère generously over the croutons.
Broil 3-5 minutes until cheese is melted, bubbly, and golden brown in spots. Serve immediately — the bowls will be very hot.
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