First, melt chocolate chips together with shortening.
Pour the melted chocolate into a pie plate and spread it all over to coat.
Mix the peanut butter filling, then spread it evenly in the pie pan.
Melt additional chocolate and pour it over the peanut butter pie filling.
Place the peanut butter cup pie into the fridge to chill for an hour.
Dig into your jumbo-sized Reese's peanut butter cup pie!