In a large bowl, using a handheld electric mixer set at medium-high speed, cream
together peanut butter, cream cheese and vanilla extract. Gradually beat in confectioners'
Using an electric mixer fitted with chilled beaters and a chilled bowl, beat
cream just until stiff peaks begin to form. With a rubber spatula, stir 1/3 of the
whipped cream into peanut butter mixture until smooth.
Gently fold in remaining
whipped cream until incorporated. Spread evenly in pie shell.
Refrigerate for at
least 2 hours or until peanut butter mousse is firm. If you'd like, top pie
with whipped cream, chopped peanuts and/or chocolate curls.