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Here in the Po Valley, the fog has been with us for a few days and do you know what dish I love on these days? Onion soup au gratin.

Hot, fragrant, with melted Pecorino cheese and crispy on the surface, the whole family loves it and it is perfect as a one-course meal.

For the onion soup au gratin, you will only need very few ingredients, a diving mask (I’m joking of course, but it’s the only tool to keep you from crying while slicing the large amount of onions you need!) and a cooking time of 40 minutes, which you will have to plan. After that, enjoy this fantastic dish!

I forgot, you can also follow the recipe step by step in the video that kept us company in the spring lockdown: enjoy the video.

Onion soup au gratin   

11.88g carbohydrates per 100g

 Ingredients

  • 1kg white onions
  • 1lt vegetable or meat stock
  • 200g fresh Pecorino cheese
  • 4 slices of bread** (in my case 160g, i.e. 40g per slice)
  • 50g matured Pecorino cheese
  • 30g extra virgin olive oil
  • 20g brown rice flour*
  • salt and pepper

**Ingredients specific for celiacs

*Ingredients whose labels must read “gluten-free” (or, in Italy, present on  Prontuario AIC)

Preparation

  1. Peel the onions and cut them into very thin slices, perhaps with the help of a mandoline. Heat the oil in a crock pot, add the onions, salt and let them stew slowly with the lid on for 20 minutes, stirring occasionally.
  2. Sprinkle the onions with the sifted flour, stir well so that no lumps form, pour in the boiling stock, cover the pan again and cook for another 40 minutes.
  3. Divide the soup among 4 ovenproof single-portion bowls, cover them with a slice of toasted bread with a slice of fresh Pecorino cheese and put the bowls under the oven grill until the cheese has melted. Once removed from the oven, top with grated matured Pecorino cheese and a grinding of pepper.

zuppa di cipolle gratinata

Onion soup au gratin ready to eat

Version with gluten

Simply replace the gluten-free bread with standard bread.