Cookie Sheet Apple Pie

3 3/4 cups flour
1 1/2 tsp. salt
3/4 cup shortening
3 eggs, lightly beaten
1/3 cup milk
8 cups sliced peeling baking apples
1 1/2 cups sugar
1 tsp. ground cinnamon
1/2 tsp. ground nutmeg
1 cup crushed cornflakes
1 egg white, beaten

In a bowl, combine flour and salt. Cut in shortening until mixture resembles coarse crumbs. Add eggs and milk; mix to form dough. Chill for 20 minutes. Divide dough in half; roll one half to fit the bottom and sides of a greased 15x10x1" baking pan. Arrange apples over crust. Combine sugar, cinnamon, nutmeg and cornflakes; sprinkle over apples. Roll remaining dough to fit top of pan and place over apples. Seal edges; cut slits in top. Brush with egg white. Bake at 400 degrees for 15 minutes. Reduce heat to 350 degrees and bake for 25-30 minutes or until golden.