Mix flour and salt in a medium sized bowl.
Cut shortening into flour.
Beat egg in a small bowl and mix the vinegar and water with the egg. Add to the dry mixture.
Mix with hands until it is moistened. Don't work it too much or it won't turn out as well.
Roll into 3 balls and chill overnight.
Preheat oven to 350 degrees.
Roll out two pie crust balls and add to one to the bottom of a pie pan.
Fill with apple caramel filling, then cover with the other rolled out piece.
Cinch the two pieces of crust together, then poke a hole in the top. You can also rub some milk and sprinkle sugar on the crust.
Bake for 1 hour or until crust is done. Cool, then serve.