Chocolate Pie

Directions

1. 1
   Combine sugar, flour, cocoa and salt in medium saucepan.
2. 2
   Stir in milk.
3. 3
   Cook over medium heat, stirring constantly.
4. 4
   Mix a small amount of lukewarm milk and sugar mixture with beaten egg.
5. 5
   Set egg mixture aside.
6. 6
   Continue to cook milk mixture until it starts to boil and thicken.
7. 7
   Stir in egg mixture.
8. 8
   Turn heat to low and cook for 2 minutes.
9. 9
   Remove and stir in margarine and vanilla. Pour in cooled pie crust.
10. 10
    When cool, top with Cool Whip.