Preheat oven to 350 degrees F (175 degrees C).

Grease and flour a 9×13 inch pan.

In a medium bowl, stir together the flour, 2 tablespoons of sugar, and salt.

Cut in the shortening until the mixture resembles coarse crumbs.

Combine the egg yolks and 1/2 cup of milk, stir into the flour mixture.

On a lightly floured surface, roll half of the dough out to the size of the prepared pan.

Cover the inside of the pan with the dough.

Spread dough with a light coating of egg white.

Fill with sliced apples and sprinkle sugar and cinnamon on top.

Roll out remaining dough and place on top of apples.

Brush with a light coating of egg white.

Bake for 35 to 40 minutes in the preheated oven, until the crust is golden.

In a small bowl, beat together the confectioners’ sugar, salt, vanilla and milk until smooth.

Drizzle over cooled bars, cut into squares.