This is a wonderful way to turn Thanksgiving leftovers into something special. I used my own Best Pie Crust recipe posted on JAP. Chicken can be used instead of turkey with little difference in taste. We like to eat this with the cranberry gelatin side dish I make and apple cider. Please let me know how your family enjoys this dish. :)
Preheat the oven to 425 degrees. Heat the broth to boil in a large pan. Add veggies and simmer 10-15 minutes or until tender.
Blend flour with cold milk, stir into broth mixture. Cook and stir over medium heat until just slightly thickened.
Stir in cheese, turkey (chicken), and poultry seasoning. Heat until cheese melts.
Spoon into a 2 1/2-3 quart casserole dish. Place crust over filling and seal edges completely. Make several slits to vent for steam. Beat egg with water and brush on crust. Bake for 40 minutes or until crust is nice and golden.