Classic French Onion Soup (Without Bread)
A rich, gluten-free version of the beloved French classic.
Key Info:
- Prep Time: 30 minutes
- Cook Time: 1 hour 20 minutes
- Total Time: 1 hour 50 minutes
- Servings: 4-6
- Difficulty: Medium
- Dietary: Gluten-free, Low-carb adaptable
Equipment Needed:
- Large Dutch oven or stockpot
- Sharp knife
- Wooden spoon
- Oven-safe soup bowls
- Ladle
- Alternative: Regular bowls + separate broiler-safe pan for cheese melting
Ingredients:
For the Base:
- 4 large yellow onions (about 1.5kg/3.3lbs), thinly sliced
- 60g/¼ cup unsalted butter
- 2 garlic cloves, minced
- 8 cups (2L) beef broth (use vegetable broth for vegetarian version)
- 240ml/1 cup red wine (optional)
Seasonings:
- 4 fresh thyme sprigs (or 1 tsp dried)
- 2 bay leaves
- Salt and black pepper to taste
Topping:
- 200g/2 cups Gruyère cheese, grated (substitute with Swiss cheese)

Method:
- Slice onions thinly and evenly (about 1/8 inch thick).
- Melt butter in a Dutch oven over medium heat.
- Add onions and cook until deeply caramelized (40-45 minutes), stirring every 5-10 minutes.
[Color should be deep golden brown, not black] - Add garlic, cook for 1 minute until fragrant.
- Pour in wine (if using), scrape the bottom of the pot.
[Let reduce by half, about 5 minutes] - Add broth, thyme, and bay leaves.
[Bring to a boil, then reduce to a simmer] - Simmer uncovered for 30-40 minutes until slightly reduced.
- Season with salt and pepper to taste.
- Ladle into oven-safe bowls.
- Top each bowl with a generous amount of cheese.
- Broil on high until cheese is golden and bubbly (2-3 minutes).




Crucial Tips:
- Don’t rush the onion caramelization – it’s the foundation of flavor.
- Keep onion slices uniform for even cooking.
- Scrape the pot bottom frequently to prevent burning.
- Taste and adjust seasoning before serving.
Storage & Scaling:
- Keeps in the fridge for 3-4 days (store cheese separately).
- Freezes well without cheese for up to 3 months.
- Recipe doubles easily – use a wider pot for proper onion caramelization.
Common Mistakes:
- Rushing the onion cooking process.
- Not deglazing the pot properly.
- Using pre-grated cheese (won’t melt as well).
Variations:
- Vegetarian: Use vegetable broth.
- Keto: Skip wine, ensure broth has no added sugars.
- Extra-rich: Add a splash of heavy cream before serving.
- Dairy-free: Top with crispy fried onions instead of cheese.