This is the Basic Pie Dough recipe from the Joy of Cooking cookbook.
Basic Pie Dough
2c flour
1teas salt
1/3c vegetable shortening
1/3c chilled butter
5+TBS water
This makes 2 9in pie crusts
Super simple... I add white sugar to my dough also. Again, I don't know how much because I tend to make tons at a time and really don't pay any attention to how much of anything I put in.
If using this for something like potpie I'd say use it the way it is, if making a dessert pie, I'd say be sure and add some white sugar to it! Totally changes the flavor! I always have people asking how I make my crust, they love it!
This isn't my copy, but this is the same version I have. :)