Preheat oven to 350F.
Pour gravy and stock in a saucepot over medium-high heat until it comes to a bubble.
Over medium-high heat, heat one turn of the pan EVOO and saut vegetables until softened, about 3-5 minutes. Turn off heat and add turkey and gravy mixture to the vegetables and toss to coat.
Pour pie filling in a casserole and top with potatoes.
Bake 20-25 minutes until golden brown and bubbly.
