French Onion Soup
Cozy and warming, ready in one pot.
Why You'll Love This Recipe
- Restaurant-quality French bistro classic at home.
- Caramelized onions are pure umami magic.
- The cheese pull is unbeatable.
- Mostly hands-off — onions cook themselves.
- Impressive but uses simple pantry ingredients.
Ingredient Notes
- Yellow onions are traditional; sweet onions get too sugary.
- Beef stock is classic, but a mix of beef and chicken stock is even better-balanced.
- Gruyère is non-negotiable — it browns beautifully and tastes nutty.
Ingredient Substitutions
- Vegetable stock + soy sauce for vegetarian.
- Dry sherry instead of wine for richer flavor.
- Swiss or Emmental if Gruyère is unavailable.
Equipment Needed
- Heavy Dutch oven or wide pot
- Oven-safe soup crocks or bowls
- Broiler
Prep Tips
- Slice all onions before starting — you'll be at the stove for an hour.
- Stale baguette toasts up crisper than fresh.
Instructions
- 1
Gather and prep: 1 medium onion, diced, 1 cup beef broth, 2 tbsp butter, 1 cup white wine, 4 slices bread, 1 cup shredded cheese, 1 tsp thyme, 3 cloves garlic, minced. mince the garlic, dice the onion, shred the cheese, and chop the fresh herbs before you start cooking.
- 2
Slowly caramelize onions in butter 45 min.
- 3
Add wine and broth, simmer 20 min.
- 4
Top with bread and cheese; broil until bubbly. Simmer uncovered 5 more minutes to thicken if needed; taste and adjust salt and acid before serving.
Artsi Pro Tips
- Slice onions with the grain (pole to pole) — they hold their shape better.
- A splash of brandy or cognac with the wine adds depth.
- Use a mix of Gruyère and Comté for the most authentic flavor.
Common Mistakes
- Rushing the onions on high heat — they burn instead of caramelizing.
- Skipping the deglaze — fond is where the flavor lives.
- Using pre-shredded cheese — it has anti-caking agents that prevent good melt.
- Broiling without watching — cheese goes from bubbly to charcoal in seconds.
Storage
Refrigerate soup (without bread/cheese) up to 4 days. Freeze up to 3 months.
Reheating
Reheat soup on the stove over medium until simmering. Top with fresh toast and cheese, then broil.
Recipe Tags
Nutritional values are approximate and may vary depending on ingredients used.