Boil the potatoes and put them peel. In a little sunflower oil stew mushrooms. Fry separately livers. Prepare bechamel sauce - in the butter fry flour, diluted with milk, stirring vigorously to not get lumpy, boil a few minutes, add salt, tampering with pepper. In gyuvechetata sliced ​​potatoes. Top allocate livers and mushrooms, pour the sauce. Cheese, cut into thin slices, spread on top. Bake in preheated oven strongly.