Chocolate Cream Pie For crust 1 1/3 cups chocolate wafer crumbs (from about 26 cookies such as Nabisco Famous Chocolate Wafers) 5 tablespoons unsalted butter, melted 1/4 cup sugar For filling 2/3 cup sugar 1/4 cup cornstarch 1/2 teaspoon salt 4 large egg yolks 3 cups whole milk 5 oz fine-quality bittersweet chocolate (not unsweetened), melted 2 oz unsweetened chocolate, melted 2 tablespoons unsalted butter, softened 1 teaspoon vanilla For top