Drain the sauerkraut. Peel and chop the onions. Heat clarified butter in an ovenproof pan. Cut the sausage into slices and fry in it. Take out. Sauté onions and sauerkraut in frying fat.
Add the sweet paprika. Deglaze with 1/4 litre water, bring to the boil and stir in the stock. Cover and stew for about 30 minutes. Clean, wash and chop the peppers. Add to the cabbage about 5 minutes before the end of cooking time.
Mix sour cream and cheese. Season with salt, pepper and sweet paprika. Pour over the sauerkraut. Bake in the preheated oven (electric cooker: 225 ° C/ gas: level 4) for 10-15 minutes.