Cut the savoy cabbage into strips, wash and drain. Put the oil in a saucepan. Add onions, carrots and mushrooms one by one and fry. Fry the savoy cabbage briefly. Deglaze with white wine and let it boil down briefly. Add the vegetable stock and 150 ml water and let it boil down for about 10 minutes.
Fry the potato noodles in a separate pan until crispy. Add the cream to the vegetables and simmer. Season to taste with salt, pepper and nutmeg. Put the potato noodles and vegetables in a baking dish, sprinkle with cheese and bake in the oven at 200 ° C for about 20-30 minutes until the cheese melts and is lightly browned.