Preheat oven to 400-degrees. Combine turkey and cranberry sauce and spread evenly on the bottom of an 8x8 glass baking dish.
Evenly press on leftover mashed potatoes and sprinkle corn over the top.
Mix together milk and leftover gravy and spread evenly over potatoes and corn. Sprinkle on leftover stuffing and lightly drizzle chicken broth over the top (this will keep the stuffing from drying out).
Cover with tin foil and bake at 400-degrees for 25-30 minutes or until heated through.