Chocolate Peanut Butter Pie

Preheat the oven to 350F. Combine the graham cracker crumbs, sugar and melted butter in a mixing bowl, and stir together thorougly. Press the mixture into the bottom and sides of a 9-inch pie plate. Bake the crust for 8 minutes. Then set it aside to cool completely. Mix the cream cheese, peanute butter, and sugar together in a large bowl until well-blended. Whip the cream with an electric mixer until stiff, and fold it into the cream cheese mixture. Spoon the filling into the cooled crust. Combine the sugar and cream in a saucepan and bring to a boil. Reduce the heat and simmer, without stirring, for 6 minutes. Remove the pan from the heat, add the chocolate and butter, and stir until melted. Then stir in the vanilla. Carefully pour the topping over the pie, and refrigerate, uncovered, for at least 4 hours.