01 -
Blend flour, shortening, and salt together in a bowl. Set aside.
02 -
In a separate bowl, mix egg yolk and milk thoroughly.
03 -
Add the egg yolk and milk mixture to the flour mixture. Mix until a uniform dough forms.
04 -
Divide the dough in half. Roll out one half on a floured surface to fit an 11"x17" greased cookie sheet. Set aside.
05 -
In a bowl, mix sliced apples, sugar, cinnamon, salt, and all-purpose flour until combined. Pour the mixture over the prepared bottom crust.
06 -
Evenly sprinkle tapioca over the apple filling.
07 -
Roll out the remaining dough to match the size of the cookie sheet. Place it over the apple filling.
08 -
Whip the egg white and brush it over the top crust. Sprinkle white sugar evenly over the top.
09 -
Preheat the oven to 350ºF (175ºC). Bake for 35-40 minutes, or until the crust is golden brown.