Mix graham cracker crumbs with melted butter until combined.
Press the mixture into the bottom and sides of a pie dish.
Beat together peanut butter, powdered sugar, and cream cheese until smooth.
Fold in whipped cream and vanilla extract until fully incorporated.
Pour the peanut butter mixture into the prepared crust.
Refrigerate for at least 4 hours or until set.
Garnish with chocolate shavings before serving.
Slice into wedges and enjoy!