Dark Chocolate Cream Pie

Directions

1. 1
   In large saucepan, combine sugar, cornstarch and salt.
2. 2
   Stir in milk and chocolate.
3. 3
   Cook and stir over medium high heat until thickened and bubbly.
4. 4
   Stir a small amount of hot filling into egg yolks; return all to the pan, stirring constantly. Bring to a gentle boil; cook and stir 2 minutes longer.
5. 5
   Remove from the heat.
6. 6
   Stir in butter and vanilla.
7. 7
   Spoon into baked pastry shell.
8. 8
   Cool on wire rack.
9. 9
   Cover and chill for at least 3 hours.