Clean the mushrooms and separate the hoods. Put the pre-washed and soaked in cold water to boil with a little salt.
Once they fully absorb the water, add cream and bread crumbs. Stir, add the grated cheese, salt, pepper and nutmeg to taste. Arrange the mushrooms in a greased baking dish, fill each with stuffing of rice and cream and put a little butter on.
Add some hot water into the pan and put them to bake for for 15 -20 minutes.