Preheat oven to 300 degrees F.

In a bowl combine flour, sugar, salt and shortening with a pastry blender or your hands until it's all incorporated.

Add the egg yolk to a measuring cup, then add enough milk to make 2/3 cup. Whisk together.

Pour the egg/milk mixture into the flour mixture and combine with your hands. Dough will be a little sticky.

Make two equally sized balls of dough.

Flour your surface, and roll out one dough ball a little bigger than your 9x13 cookie sheet. Careflully lay it into the cookie sheet and press into the edges.

Drain Paisely Farm Apples, and toss with 2 Tablespoons flour until coated.

Lay the apples in an even layer into the bottom crust.

Roll out the top crust the same as the bottom, lay it on top of the apples. Seal and form your crust edges.

Poke a few holes to vent your crust, then whisk the egg white together with about a teaspoon of water. Brush the crust.

Bake for 30 minutes at 300 degrees. Turn oven up to 375 degrees and bake for 15 minutes longer, or until crust is golden brown.

Whisk together the powdered sugar, vanilla and milk to make glaze. After the bars have cooled slightly, but are still warm, drizzle glaze over the bars. Let set.

Cut into squares and enjoy!