Introduction
What if the deep, rich flavor of French onion soup and the earthy goodness of creamy mushroom soup joined forces? Meet your new cozy classic: Creamy French Onion and Mushroom Soup. This luxurious bowl of comfort combines caramelized onions, sautéed mushrooms, herbs, cream, and broth to deliver a warm hug in every spoonful.
Perfect for cold evenings, dinner parties, or an elevated weekday meal, this soup is rich in flavor yet surprisingly easy to prepare.
Ingredients
For the Soup Base:
- 2 tbsp unsalted butter
- 2 tbsp olive oil
- 3 large yellow onions, thinly sliced
- 1 tsp sugar
- 4 garlic cloves, minced
- 1 tbsp fresh thyme (or 1 tsp dried)
- 8 oz cremini or baby bella mushrooms, sliced
- 1/4 cup dry white wine (optional)
- 4 cups beef or vegetable broth
- 1/2 cup heavy cream
- Salt and pepper to taste
Optional Toppings:
- Crusty baguette slices
- Gruyère or Swiss cheese, shredded
Timing
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour
A gourmet soup that brings restaurant flavor to your home kitchen in under an hour.
Instructions
Step 1: Caramelize the Onions
In a large pot or Dutch oven, heat butter and oil over medium heat. Add onions and sugar. Cook, stirring often, for 25–30 minutes until onions are golden and caramelized.
Step 2: Sauté the Mushrooms and Garlic
Add mushrooms and cook for 5–7 minutes until browned and tender. Add garlic and thyme; stir for 1–2 minutes.
Step 3: Deglaze and Simmer
Pour in the white wine (if using) to deglaze the pot, scraping up browned bits. Let simmer 2–3 minutes. Add broth and bring to a gentle boil. Reduce heat and simmer uncovered for 10–15 minutes.
Step 4: Make it Creamy
Stir in the heavy cream. Simmer another 5 minutes. Taste and adjust seasoning with salt and pepper.
Step 5: Serve
Serve hot in bowls. For a bistro-style twist, top with toasted baguette slices and melted Gruyère under the broiler.
Tips for Success
- Caramelize onions slowly for rich flavor
- Use fresh thyme or a sprig of rosemary for herbal depth
- Blend part of the soup if you want a creamier texture
Variations
- Make it vegetarian by using vegetable broth
- Use coconut cream for a dairy-free option
- Add cooked wild rice or barley for a hearty version
Storage
Store in an airtight container in the fridge for up to 4 days. Reheat on the stovetop. Can be frozen for up to 2 months.
Conclusion
This Creamy French Onion and Mushroom Soup is comfort food elevated — the kind of meal that feels like fine dining with the warmth of a home-cooked dish. Ideal as a starter or main course with crusty bread on the side.
FAQs
Q1: Can I make this soup ahead of time?
Yes! It actually tastes better the next day.
Q2: What type of mushrooms work best?
Cremini, baby bella, or a mix of wild mushrooms all work beautifully.
Q3: Can I make it vegan?
Yes, with olive oil, veggie broth, and coconut cream or cashew cream.
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