In a medium mixing bowl, combine graham cracker crumbs, sugar, and butter. Press into a 9-inch pie pan (grease the sides of a 9-inch springform pan if using). Place in the freezer for 15 minutes and make the filling.
Beat the peanut butter, softened cream cheese, vanilla extract, and powdered sugar for about 2 minutes until fluffy. Mix in the finely chopped butterfingers.
In a separate bowl, beat the whipped cream at medium speed for 8-12 minutes until you have stiff peaks (they stand on their own).
Gently fold the whipped cream into the peanut butter mixture.
Pour that into the chilled pie crust and put back into the freezer for around 30 minutes. It needs to be cold before adding on the chocolate drizzle.
In a small microwave-safe bowl, stir together heavy cream and corn syrup, and microwave for 2 minutes. Add the chocolate and let it sit for 3 minutes. Add salt, then whisk until the chocolate is melted and smooth.
Let the chocolate cool to room temperature, then put in a plastic bottle to drizzle over the pie. Sprinkle cold pie with chopped up butterfingers and drizzle on chocolate ganache.
Cover the pie and place in the fridge for at least 4 hours or in the freezer for 2 hours before serving. If placed in the freezer, let it come to room temperature for about 20 minutes before enjoying.