Place the flour, salt, and sugar in a food processor fitted with an “S” blade and pulse to combine.
Add the shortening and cold water and process until the mixture resembles a coarse meal, begins to stick together, and holds together when pinched.
Remove the dough from processor (it will be crumbly) and form it into a round, flat disc.
Wrap the disc in plastic wrap and refrigerate for at least 1 hour, and up to one day (overnight).
After the dough has chilled, preheat oven to 450 degrees F.
Roll out dough on a well-floured surface or pastry cloth.
Place it into a deep, 9-inch, round pie plate and pinch the edges to form a crust. Then, gently prick the dough with a fork all over.
Set a piece of parchment paper on top of the crust, then add the pie weights.
Bake for 10-12 minutes or until it just begins to brown. If any bubbles form, gently deflate them by pricking with a fork or sharp knife.
Set aside to cool.
Put 1 ¼ cups of whipping cream, powdered sugar and vanilla into the bowl of a standing mixer fitted with the wire whisk attachement (or use a large bowl and handheld mixer).
Beat, starting on low speed and increasing to high speed for 2-3 minutes, or until stiff peaks form.
Transfer to another bowl, or to a large piping bag, and set aside in the refrigerator.
Whip ¾ cup whipping cream (for the filling) in a standing mixer fitted with the wire whisk attachment on high until stiff peaks form. Set aside in the refrigerator.
Melt chocolate in the microwave or over a double boiler, stirring occasionally, until smooth. Set aside to cool.
In the bowl of a standing mixer fitted with the paddle attachement, or in a large bowl with a handheld mixer, cream the butter sugar, powdered sugar and vanilla together 3 minutes - until the sugar is dissolved and the mixture is light and fluffy.
Add the melted chocolate and beat for 1 minute, pausing and scraping down the sides once halfway through.
Add eggs one at a time, beating on medium speed for 1 minute after each addition.
Gently fold in the ¾ cup of whipped cream by hand.
Evenly spread the chocolate filling into the baked and cooled pie crust.
Top with whipped topping in one of two ways: 1) Simply spread the whipped topping over the pie with a spatula or 2) Pipe the whipped topping on top with a decorator’s tip to make a pretty design.
Place in the refrigerator to chill for at least 4 hours or overnight.
Serve chilled and enjoy.
