The mushrooms are cleaned, washed and the tails cut.
Chop the onion and grate the carrot.
Put the onion, carrot and finely chopped tails in a pan with a little olive oil and cover with a lid for 10 minutes. When they are ready, leave them to cool a bit, then add the meat, egg, salt, pepper and finely chopped parsley.
With this composition the hats are filled with the help of a teaspoon.
Put in a pan with a little oil and bake for 30-35 minutes.