Mashed Potato-Topped Turkey Pot Pie

Preheat the oven to 375 degrees F (190 degrees C).

Press pie crust into the bottom of a 9x13-inch baking dish, then layer turkey meat over crust; spoon cream of chicken soup over turkey.

Bring 1 cup of water to a boil in a saucepan over medium heat and stir in mixed vegetables; cook until vegetables are tender, about 5 minutes. Whisk dry gravy mix with remaining 1 cup of water, then stir gravy mixture into mixed vegetables. Bring to a boil, then simmer until thickened, about 1 minute. Pour vegetables and gravy over cream of chicken soup layer in the pan. Spread mashed potatoes over the top of pie.

Bake in the preheated oven until filling is bubbling, about 45 minutes.