Chocolate Pie - cooking recipe

Ingredients

1/2 c. cocoa
1 1/4 c. sugar
1/3 c. cornstarch
1/4 tsp. salt
3 c. milk
3 Tbsp. margarine
1 1/2 tsp. vanilla
1 (8 oz.) carton Cool Whip

Preparation

Combine the first 4 ingredients.
Blend in milk.
Cook over medium heat; boil for 1 minute.
Remove from heat.
Add margarine and vanilla.
Cool.
Add Cool Whip.