Ingredients for 4 guests
* 600 grams of onions
* 1 liter of vegetable broth
* 2 tablespoons flour
* 4 beautiful slices of bread (preferably campaign)
* 120 g of grated Gruyere
* A trickle of olive oil
* Pepper

Preparation 25 minutes

* Bring to boiling broth vegetables. Meanwhile, peel onions and slice them thinly.

*

In a pan, let them come back 10 minutes in the net oil until lightly browned.

*

* Sprinkle onions with flour and stir constantly over medium heat until it begins to scorch.

Then add the broth. Pepper.



Let simmer 20 minutes with a lid and simmer.



10 minutes Cooking
* Preheat oven to 240 ° C (th.8). At the end of the cooking pot, pour the soup into 4 bowls can go in the oven. Place 1 slice of bread a bowl on the bottom of the soup. Sprinkle the Gruyere cheese and put in oven 7 to 8 minutes.
* Serve and enjoy illico presto!

Sources: Inspired by a recipe after "Revenue Yes Head! 2009"

Remarks

If individual bowls, you can use a gratin dish.
In this case, drop all the slices of bread on top of the soup.



And sprinkle all of Gruyere cheese.



This dish is perfect after meals holidays ahead in the coming days ...

The first part of this soup can be prepared in advance. So just warm it up before making gratin in the oven. This can be very handy to warm up at home after having braved the cold winter Christmas markets ...