Combine flour, 1 Tbsp sugar, Crisco, and salt with fork or pastry blender.
In liquid measuring cup, put 1 egg yolk and enough milk to make ⅔ cup. Beat with a fork and add to flour mixture. Mix
Roll out to make top and bottom crust for a 12 x 18" pan.
On bottom crust, add sliced apples. Sprinkle ⅔ cup sugar and cinnamon.
Add top crust and pinch together sides. With remaining egg white, beat until stiff. Spoon over top crust.
Bake for 45 minutes at 350℉. Frost with powdered sugar frosting while still hot.