Preheat oven to 425°F. Prepare pie crusts as directed on package for two-crust pie using 9-inch pie plate.
Whisk Seasoning Mix into boiling water in large bowl, stirring constantly for 2 minutes. Add milk, chicken and vegetables; stir until well blended. Spoon filling into pastry-lined pie plate. Top with second crust. Seal edges and cut several slits on top. Place pie plate on middle oven rack.
Bake 40 to 45 minutes or until crust is golden brown and filling is bubbly. Let stand 15 minutes before cutting.
Test Kitchen Tips:
•For thicker gravy, add 1 tablespoon flour when stirring Seasoning Mix into boiling water.
•Substitute cooked turkey for the chicken.
•Substitute leftover cooked cut-up vegetables or canned vegetables (drained) for the frozen vegetables.