French Onion Soup
Ingredients
For the soup:
- 5 to 6 large yellow onions thinly sliced
- 2 tbsp unsalted butter
- 1 tbsp olive oil
- 1 tsp sugar
- 1 tsp salt
- 2 garlic cloves minced
- 2 tbsp plain flour
- 120 ml dry white wine (or dry sherry/vermouth)
- 1.5 L vegetable stock
- 1 tbsp white miso paste optional – adds umami depth
- 2 sprigs thyme or ½ tsp dried
- 1 bay leaf
- salt and black pepper to taste
For the gratin topping:
- 1 baguette sliced into 1–2 cm rounds
- 1.5 cups grated Gruyère Comté, or a mix (Emmental also works)
Instructions
The Soup
- In a large pot, melt butter and olive oil over medium-low heat.
- Add onions, salt, and sugar. Cook slowly, stirring frequently, for 35–45 minutes until deep golden brown. Don’t rush this step — the flavour builds here.
- Add garlic and flour
- Add garlic and stir for 1 minute.
- Sprinkle over flour, stir well to coat, and cook another 2–3 minutes.
- Pour in wine and scrape up the fond from the bottom. Simmer 2 minutes.
- Add the veg stock, thyme, bay leaf, and optional miso. Simmer gently for 30–40 minutes.
- Season to taste and remove bay leaf and thyme sprigs before serving.
The topping
- Toast the baguette slices. Preheat grill
- Ladle soup into ovenproof bowls, float the toasts, and top with grated cheese.
- Grill until cheese is melted, bubbling, and golden — 2 to 4 minutes.
- Serve immediately.
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