French onion soup is already incredible, but adding earthy mushrooms takes it to another level. The sweetness of caramelized onions meets the umami depth of mushrooms, all topped with crusty bread and bubbling gruyère. It's bistro magic.
This mashup gives you the best of both worlds - the iconic French onion soup presentation with the added richness that only mushrooms can provide. It's comfort food worthy of a Parisian café.
Caramelizing Onions
- Low and slow: Don't rush it
- Patience: Takes 25-30 minutes
- Color: Deep golden brown
- Sweetness: Develops naturally
Cheese Options
- Gruyère: Classic choice
- Comté: French alternative
- Swiss: Budget option
- Fontina: Melts beautifully
Serving Suggestions
- Broil until bubbling
- Oven-safe bowls essential
- Serve immediately
- Perfect for cold nights
French Onion Mushroom Soup
Caramelized onions and mushrooms with gruyère.
Nutrition per serving
345Calories
14gProtein
28gCarbs
20gFat
3gFiber
8gSugar
Ingredients
Instructions
-
Caramelize onions. Melt butter in a large pot over medium heat. Add onions and cook, stirring occasionally, 25-30 minutes until deeply caramelized.
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Add mushrooms. Add mushrooms to the pot. Cook 8-10 minutes until golden and tender. Add thyme and cook 1 minute.
-
Build soup. Add wine and scrape up any browned bits. Add broth and bay leaf. Simmer 15 minutes. Season with salt and pepper.
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Toast bread. Preheat broiler. Toast baguette slices until golden.
-
Broil. Ladle soup into oven-safe bowls. Top each with a bread slice and generous gruyère. Broil 2-3 minutes until cheese is bubbling and golden.
Recipe Notes
- Oven-safe bowls: Essential for broiling - check handles.
- Vegetarian: Use vegetable broth.
- Make ahead: Soup base keeps well; add bread/cheese when serving.
- Storage: Refrigerate base 4 days.
