Double Chocolate Pie

INGREDIENTS
1 (9 inch) pie crust, baked
1 1/2 cups white sugar
1/3 cup cornstarch
1/2 teaspoon salt
3 cups milk
3/4 cup semisweet chocolate chips
2 (1 ounce) squares unsweetened chocolate, chopped
4 egg yolks, beaten
1 tablespoon vanilla extract

DIRECTIONS
Combine sugar, cornstarch, and salt in a 2-quart saucepan. Stir in milk gradually. Add chocolate chips and unsweetened chocolate. Place over medium heat, stirring constantly, until mixture thickens and boils. Boil and stir 1 minute.
Place egg yolks in a medium heatproof bowl. Gradually pour half of chocolate mixture into egg yolks, whisking constantly.
Whisk egg yolk mixture back into mixture in saucepan. Place over medium heat and bring back to a boil, stirring constantly. Boil and stir 1 minute. Remove from heat; stir in vanilla extract.
Pour mixture into baked pie shell. Press a layer of plastic wrap onto filling. Refrigerate at least 4 hours but no longer than 48 hours. Remove plastic wrap before serving and top with whipped topping.

Comments:
This was by far the favorite pie of our holiday dinner. just a warning...it is VERY sweet. Just a small slice would do or you get a major sugar rush. The filling actually gave more than a single pie worth. Also, it really does not hold up well after 2 days.