Crush chocolate graham crackers in a food processor fitted with a metal blade or by placing the crackers in a zip-lock bag and crushing them with a rolling pin.
Add melted butter and 1/4 cup confectioner's sugar to the crumbs and mix. Place crumbs in a 9-inch pie pan, pressing to line bottom and sides of the pan. Bake crust 10 minutes. Remove from oven and cool.
In a mixer fitted with a paddle attachment combine the Creamy Peanut Butter, 1 cup confectioner's sugar, Mascarpone cheese, and vanilla extract. Mix on medium speed until combined making sure to not over mix. Gently fold in whipped cream and chocolate morsels. Spread the filling evenly in the baked crumb crust.
Sprinkle the pecans and English toffee bits over the top of the pie. Generously drizzle Chocolate Peanut Butter Sauce over the top of the pie. Chill pie until ready to serve.