Combine flour, cinnamon, and salt in a bowl.
Cut in shortening using a pastry blender, knife, or hands, until the largest pieces are about the size of hazelnuts.
Sprinkle in water, 1 tablespoon at a time, moistening the flour with your hands or a fork. Gather into a ball. If the ball crumbles easily, continue adding 1 tablespoon of water at a time and working into the dough until no longer crumbly.
Flour a large board or countertop. On the floured surface, roll dough out into about a 12 inch circle or until about ⅛ of an inch thick. Every so often, use a pastry scraper or a knife to lift up the dough and sprinkle flour underneath to keep the dough from sticking to the surface.
Using the rolling pin, transfer the dough to the pan (roll the dough up onto the rolling pin, then move to the pan and unroll).
Trim the crust at the top edge of the pan, and if desired, decorate edges of crust. I like to crimp the edges by pressing one side of the crust with my thumb and pointer finger, and the other with the thumb of my other hand. I work my way around the whole crust until it is all crimped.
Refrigerate the prepared crust for 30 minutes (this part is necessary, otherwise your crust will fall while in the oven).
Preheat the oven to 425.
Poke the bottom of the pie crust with a fork about 10 times. Line pie crust with foil, and put pie weights onto the foil (you can also use dry beans or coins). Bake the pie crust at 425 for 10 minutes, then remove weights and foil. Bake for another 5 minutes.
Let rest on the counter until cool.