In a baking dish, line the bottom and as much of the sides as you can with one of the pie crusts. Add the filling evenly. Place the next pie crust on top covering as much of the pie filling as you can. In a bowl, beat an egg with a little water or milk to make an egg wash for the crust. Using a pastry brush, brush the egg wash on top of the crust in a nice even layer. This helps to really brown the crust and add a nice richness. Bake for 30 minutes. Remove the pot pie and turn the broiler on the oven to high. Brown the top to your desired color and crispness but watch it closely so it does not burn. Remove from the oven and let it set for 5 minutes.