Roll out into shape of pan. At this point, you may cut into strips to make a lattice crust as shown, or you can just roll into a rectablge and fit into the pan to top filling. Make sure to cut slits for steam to escape if you are not making a lattice crust!
Fold crust in half, transfer to pan or pie plate.
Unfold dough over the filling.
Brush crust with beaten egg (optional), cut slits for steam to escape.
Bake pot pie for 40 minutes.