Burcu ErginsoyAide de Cuisine
09 July 2026 Last updated: 12 September 2026

This classic French soup is made by slowly caramelizing onions and simmering them in meat stock. It is served with a slice of bread and melted Kashar cheese, browned in the oven. A timeless starter for entertaining.

Step by Step

How to make it?

1

Caramelize the Onions

35 min

Cook the onions in the butter over low heat, stirring often, until soft and deep golden brown.

2

Toast the Flour and Add the Liquid

5 min

Sprinkle the flour over the caramelized onions and cook for 1–2 minutes. Add the meat stock and bay leaf, then bring to a boil.

3

Simmer

15 min

Simmer the soup for another 15 minutes, then remove the bay leaf.

4

Brown the topping

8 min

Divide the soup among oven-safe bowls. Top each with a slice of baguette and plenty of grated Kashar cheese. Bake in a preheated oven until the cheese is bubbling and lightly browned. Caution: The bowls will be very hot when removed from the oven; use a holder.

Reminder

Important: Keep the heat low and stir the onions often to prevent burning. Allow at least 30 minutes for this step. Allergens: contains dairy and gluten (bread); not suitable for people with these allergies.

#onion soup #Oven #cooking for guests
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