Taste a few slices of the apples to gauge how much sugar you’ll need to make them sweet. We especially love using a mixture of different cooking apples.
In a large bowl, mix the apple slices in the lemon juice. Sprinkle Apple Pie Spice. Pour the apple mixture into the prepared pastry shell. Mound toward the center and dot with butter.
Add top crust, and crimp pie crusts together. Beat egg white with a little water, and brush egg mixture over the top.
Place the pie pan on a baking sheet (to catch any spill over) and cook in the middle of the oven for 10 minutes. Turn the oven down to 350° F. and continue to cook for about another hour, until the top crust is a beautiful golden brown. If the edges start to darken too much, cover with a ribbon of aluminum foil.
Also good with a crumble topping of brown sugar, cinnamon, butter, and flour!