Preheat the oven for gratin dishes (electric oven: 200 °C/circulating air: 180 °C/gas: see manufacturer). Grate cheese. Mix 100 g cream and milk, season with salt and nutmeg. Peel, wash and thinly slice the potatoes. Fill potatoes and cream milk alternately into a greased casserole dish (approx. 20 x 20 cm). Sprinkle with cheese and bake in a hot oven for about 45 minutes.
Peel the shallots and dice them very finely. Peel, wash and slice the carrots. Wash and drain the cranberries. Heat 1 tablespoon butter. Sauté the carrots for about 1 minute. Add half shallots and cranberries. Season with salt and 1 tablespoon of sugar. Add 100 ml water, bring to the boil, cover and stew for 5-8 minutes.
In the meantime dab the steaks dry and season with salt. Heat clarified butter in a large pan. Fry the steaks in it for about 2 minutes on each side (medium), season with pepper. Remove, wrap in aluminium foil and let it rest for about 5 minutes.
For the sauce, fry the rest of the shallots in hot frying fat until golden brown. Deglaze with 200 g cream and cognac, bring to the boil and simmer for about 3 minutes. Add green pepper and season with salt. Arrange steaks, sauce, carrots and gratin on plates.