Wash the rabbit legs, pat dry and season with salt and pepper. Clean, wash and chop the greens. Heat the fat in a large pot or roaster. Brown the rabbit legs in it from both sides.
Add bay leaves. Deglaze with sherry and stock, bring to the boil. Let it braise in a closed pot for 25-30 minutes. Remove rabbit legs from the stock and keep warm. Remove half of the soup vegetables with a skimmer, pass through a sieve and put back into the pot.
Add cream and bring to the boil briefly. Thicken with light sauce thickener as desired. Serve rabbit legs with the sauce and the spaetzle. Garnish with parsley leaves if desired.