Onions peel, halve and cut into fine slices. Clean, wash and, depending on the size, halve or quarter the mushrooms
Wash the cutlets and pat dry. Heat clarified butter in a pan. Brown the escalopes on each side. Season with salt and pepper and remove
Fry the onions and mushrooms in the cooking fat until golden brown. Dust with flour and sweat on. Stir in broth and cream, bring to the boil briefly. Season to taste with lemon juice, salt and pepper
Put half of the mushroom sauce in a greased flat casserole dish. Place the cutlets on top. Then spread the remaining mushroom sauce on top. Grate the cheese and sprinkle over it. Bake in the preheated oven (electric cooker: 200 °C / convection oven: 175 °C / gas: level 3) for 30-35 minutes
Clean, wash and quarter the tomatoes. Remove seeds if necessary and cut the flesh into small cubes. Wash, pluck and chop the parsley as desired. Sprinkle both over the escalopes. Serve with parsley rice or crispy roast potatoes