04Bake 2 hours or until meat and vegetables are tender. (If making ahead, refrigerate stew and mashed potatoes separately up to 3 days.).
05To serve: (If made ahead, reheat stew, covered, in 375ºF oven 40 to 45 minutes until hot and bubbling). Increase oven temperature to 425ºF. Spoon mashed potatoes on stew and sprinkle with parmesan cheese. Bake 10 to 15 minutes longer until edges of potatoes are golden brown.