French Onion Soup Recipe
By Sarah Mitchell • June 14, 2026
Caramelized onions in rich beef broth, topped with crusty bread and melted Gruyère cheese.
About This Recipe
"French Onion Soup" is a Soups & Stews recipe that brings onions, sliced, beef broth, baguette, Gruyère, grated and butter together into a flavorful, well-balanced dish. Rated Medium and ready in about 70 minutes, this recipe fits easily into a busy schedule. It serves 4 and works equally well for a weeknight dinner or a relaxed weekend meal. The French inspiration behind this dish balances classic techniques with clean, vibrant flavors.
Ingredients
- 5 large onions, sliced
- 1 L beef broth
- 4 slices baguette
- 150 g Gruyère, grated
- 3 tbsp butter
- 1 tbsp flour
- 100 ml white wine
Instructions
- 1
Caramelize onions in butter over low heat 30-40 min.
- 2
Sprinkle flour, stir. Add wine and broth. Simmer 20 min.
- 3
Ladle into oven-safe bowls. Float baguette, pile on cheese.
- 4
Broil until cheese is golden and bubbling.
Expert Tips
For the best result, use the freshest, highest-quality ingredients you can find. Onions, sliced is the heart of this dish, so choose it with care. Read the recipe through before you start and prep all ingredients in advance (mise en place) so the cooking process is smooth. Oven and stovetop work especially well for this preparation. Taste and adjust salt, pepper, and acid at the end to make the flavors pop.
What To Serve With This
"French Onion Soup" is a versatile Soups & Stews dish that pairs beautifully with a simple side salad, buttered green beans, roasted potatoes and classic French sides. Choose at least one fresh and one hearty side to create a balanced meal.
Storage & Reheating
French Onion Soup stores well in an airtight container in the refrigerator for 2–3 days. Let it cool to room temperature before refrigerating before sealing the container. Reheat gently until warmed through, adding a small splash of liquid if needed to restore the original texture.
Nutrition Facts (per serving)
Frequently Asked Questions
How long does it take to make French Onion Soup?
This recipe takes about 10 minutes of prep and 60 minutes of cooking, for a total of roughly 70 minutes. It serves 4 and is rated Medium.
How do I store leftover French Onion Soup?
Store leftover French Onion Soup in an airtight container in the refrigerator for up to 3-4 days. Make sure to let it cool to room temperature before refrigerating. Reheat in the oven or on the stovetop for best results.
Can I make French Onion Soup ahead of time?
Yes, you can prepare French Onion Soup in advance. Store it in an airtight container in the refrigerator for up to 3 days. Reheat gently before serving to preserve the best texture and flavor.
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