In a 2.5 quart (10-inch) cast iron skillet heat the canola oil on medium to high heat.
Add the chopped onion and minced garlic and saute until tender. (about 2 to 3 minutes)
Stir in the flour, salt and pepper, making a roux
Slowly add the turkey broth and milk, continually stirring while adding.
Allow the mixture to simmer for a few minutes until thickened.
Once thickened, turn off the heat.
Add the chopped turkey, green beans and mixed vegetables and combine thoroughly.
Cover the skillet with a rolled low carb pie crust, fluting or crimping the edges as desired.
Cut a steam hole in the center of the crust.
Brush the crust lightly with the melted butter.
Bake in the center of a 350F oven for approximately 35-40 minutes until the crust is golden.
Remove from the oven and allow to cool slightly, and serve.