CHOCOLATE CREAM PIE

Steps:

• Make crust:
• Put oven rack in middle position and preheat oven to 350°F.
• Stir together crumbs, butter, and sugar and press on bottom and up side of a 9-inch pie plate (1-quart capacity). Bake until crisp, about 15 minutes, and cool on a rack.
• Make filling:
• Whisk together sugar, cornstarch, salt, and yolks in a 3-quart heavy saucepan until combined well, then add milk in a stream, whisking. Bring to a boil over moderate heat, whisking, then reduce heat and simmer, whisking, 1 minute (filling will be thick).
• Force filling through a fine-mesh sieve into a bowl, then whisk in chocolates, butter, and vanilla. Cover surface of filling with a buttered round of wax paper and cool completely, about 2 hours.
• Spoon filling into crust and chill pie, loosely covered, at least 6 hours.
• Make topping:
• Just before serving, beat cream with sugar in a bowl using an electric mixer until it just holds stiff peaks, then spoon on top of pie.