Clean, wash and cut the savoy cabbage into very fine strips. Cut ham into fine strips as well. Peel and chop the onion
Heat 1 tablespoon of oil. Brown the onion and ham in it. Sauté the savoy cabbage briefly. Season with salt, pepper and possibly nutmeg. Stir in 150 g crème fraîche and let simmer for 2-3 minutes. Grate cheese and melt 75 g in it while stirring. Let cool off
In the meantime, cook the lasagne sheets in portions in boiling salted water for about 3 minutes. Quench, place on a lightly oiled tray and cut in half lengthwise. Spread the savoy cabbage filling on the pasta strips, roll them up and place them close together in a greased casserole dish. Mix stock and 75 g crème fraîche and pour over the lasagne snails
Cover with aluminium foil and bake in a hot oven (electric oven: 200 °C/ convection oven: 175 °C / gas: level 3) for 20-25 minutes. Then sprinkle with the rest of the cheese and bake open for approx. 10 minutes until golden brown
Drink: light red wine