In a 3 1/2 to 6 quart crockery cooker place cabbage wedges, onion and mushrooms. Sprinkle tapioca over vegetables. Place Frozen chicken pieces atop vegetables. Pour spaghetti sauce over chicken. Cover; cook on low-heat setting for 10 to 12 hours. Transfer to a serving platter. Sprinkle with Parmesan Cheese. Makes 6 servings.