Make the crust by combining the vanilla wafer crumbs and the butter in a food processor. Press it into the sides and bottom of a nine-inch pie pan.
In a mixing bowl, combine the first four ingredients until well blended. The texture should be like a thick batter.
With a rubber spatula or wooden spoon, fold in the whipped cream carefully. It's not necessary to get all the streaks out; it's better to stop short of complete blending than to lose the air incorporated in the whipped cream.
Using the rubber spatula again, load the filling into the pie shell. Top with the peanuts and shaved chocolate. Refrigerate.