Roll out half of dough and place in 12 x 15 inch pan. Put 1 1/2 cups crushed corn flakes on bottom. Slice 7-10 peeled apples sprinkled with 1 1/4 cups sugar and 1 teaspoon cinnamon and 1/2 teaspoon nutmeg. Spread over cornflakes. Top with rolled out remaining crust. Brush with beaten egg white. Bake 3/4 hours at 350 degrees. Drizzle powdered sugar icing on top while still warm.