Preheat oven to 375 F. Melt butter in a large pan over medium-high heat. Add the onions, carrots, and celery and cook until the onions become translucent. About 5 minutes.
Add the shredded turkey and mix into veggies. Stir flour into the meat and veg. Cook for about 1 minute, to cook off the flour flavor. Add the broth and wine and cook until the sauce thickens. Add the turmeric, salt, and pepper.
Add half and half, and let mixture bubble. Remove from heat and pour mixture into a casserole dish.
Prepare pie crust according to package instructions.
Place pie crust over top of meat mixture.
Brush with egg wash (whipped egg and 2 tablespoons water).
You won't need to use all of the egg wash.
Bake for 30 minutes, or until the crust has browned.
Enjoy!