Combine apple, onion, salt, bread crumbs, pepper, sage and butter. Add water if mixture appears too dry. Cut a deep pocket into the side of each pork chop and stuff with the apple dressing. Secure with a toothpick. In large skillet, brown the stuffed chops on each side in the oil. Place chops in shallow ovenproof casserole and arrange the remaining dressing around the chops. Bake in preheated 350ºF. oven for about 1 hour. Last 5 minutes, sauté lightly the raisins and add to casserole. Serves 4-6