Let the hash browns thaw. Clean, wash, roughly cut the savoy cabbage and let it simmer in the broth. Be careful that the cabbage doesn`t get too soft, which is quick with savoy cabbage.
Drain and drain.
Place Kassel slices in a baking dish. Cover with the well-drained savoy cabbage. Crumble the defrosted hash browns and sprinkle over the savoy cabbage. Mix the cream and sour cream with salt and pepper and pour over the casserole. Finally, sprinkle the grated cheese on top and bake at approx. 180 ° (top / bottom heat) in a preheated oven for about 30 minutes.