Never use shortening. Never ever again.
Perhaps because it never comes off your hands.
Perhaps because it never comes off your dishes.
Perhaps because it smells like fake refrigerated cookie dough and burnt onions.
Or. Perhaps because it ruins cookies.
In short. If a recipe has shortening: burn it.
The day I used shortening and ruined two batches - three batches - of cookies, I had just returned from ruining eighteen turtles at the candy shop. Miss Lindsey was very sweet in suggesting that we could (maybe?) pour more fudge around the sides and make it match. Maybe as in - lets just hope people aren't grossed out by this batch of questionable-looking fudge turtles.
(I put a pecan upside-down as a garnish. Oops.)
I'll end with something to get stuck in your head.