Washed onions are cook 10 minutes in boiling salted water, dry, is carved inside and Peel. Tomatoes are scalded with boiling water, peel and finely. In some of the butter fry the finely chopped onion, carved from the inside of the onion, add chopped mushrooms and tomatoes and stew. Buns soaked in milk, smash and mix with chopped ham, parsley and salt and the mixture is added to the onion. Heads are filled with this mixture, place in an oiled baking dish and bake.