Prepare the minced meat as for meatballs, fry the onions with the mushrooms, grate cheese on a grater. Blind cutlets, make indentations in the middle (the bottom of the glass), put it in proton. Fried onions and mushrooms to put in the middle of the cutlets. Sprinkle with cheese and garnish with mayonnaise. Bake in the oven until cooked.