In a small bowl, combine wafer crumbs and butter. Press into the bottom and up the sides of a greased pie plate. Bake for 8-10 minutes at 350°F (175°C).
Arrange sliced bananas on the bottom of the crust. Combine peanut butter and chocolate in a microwave safe bowl and microwave on high for 1 minute, stirring every 30 seconds, until smooth. Spoon over banana layer.
Using a whisk or hand mixer, whisk pudding and milk for 2 minutes. Prepare whipped cream according to whip it package and fold into pudding mixture. Spread over chocolate layer and decorate as you like. Refrigerate for at least 3 hours before serving.