PREHEAT the oven to 350°F
GREASE a pie plate liberally and set aside
WHISK together 1 egg white, ¼ cup oil and 2 Tablespoons of water in a large mixing bowl. Then whisk in one box of the Simple Mills Artisan Bread Mix and stir until the batter thickens and comes together
GATHER into a ball and flatten into a thick disk. Transfer the disk to the prepared pie pan and use the heel of your hand to work the dough across the base of the pie plate and up the sides
BAKE for 10 minutes until the crust is firmed up. Remove from oven and set aside
PREHEAT 2 Tbsp of oil in a large sauté pan or dutch oven
ADD the chicken and turn a few times to cook until the sides are opaque, but it is not cooked through
ADD the onions, carrots, celery and broth, stir and season with the salt, pepper, garlic and thyme
STIR a few times to combine, then simmer until the chicken is cooked through and the vegetables are softened
ADD the tapioca starch and stir, then simmer until the gravy reaches your desired consistency. Takes about 3 minutes. Taste and adjust seasonings to your preference
SET the filling aside while you make the second crust: in a large mixing bowl, whisk together the remaining egg white, ¼ cup oil and 2 Tbsp of water
WHISK in the other box of Simple Mills Artisan Bread Mix and stir until the batter thickens and comes together
GATHER into a ball and transfer to a piece of wax or parchment paper
COVER with another piece of wax or parchment paper and roll out into a disc large enough to cover the opening of the pie plate. Let sit about 5 minutes to firm up, which will make it easier to move
PREHEAT the oven to 400°F
POUR the chicken and vegetable filling into the pre-baked pie crust
PUT the second (rolled out) crust on top of the pie and use your fingertips to pinch edges of the top crust to the edges of the bottom crust
WHISK together the egg and milk to create an egg wash. Brush it over the top of the pie. Cut 4 vents in the top
BAKE for about 20 minutes, until crust is slightly golden and the filling is slightly bubbling
SERVE immediately