Onions peel, halve and in pins cut. Clean, wash and possibly halve the mushrooms. Rinse turkey escalopes cold and dab dry. Season with salt and pepper and fry briefly on both sides in hot clarified butter. Remove from the pan.
Fry the onions and mushrooms in the frying fat until golden brown. Dust with flour. Add stock and cream and bring to the boil briefly. Season with lemon juice, salt and pepper. Put one half of the mushroom sauce in a flat casserole dish. Spread the schnitzel on top. Spread the rest of the mushroom sauce on top. Grate cheese and sprinkle over it. Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 40 minutes. Clean, wash and quarter the tomatoes.
Spread the rest of the mushroom sauce on top. Grate cheese and sprinkle over it. Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 40 minutes. Clean, wash and quarter the tomatoes. Remove seeds and cut the flesh into small cubes. Wash parsley, dab dry and chop. Sprinkle both over the escalopes before serving