Chocolate Pie
["1 1/2 c. sugar", "4 egg yolks, beaten", "2 Tbsp. margarine", "1 tsp. vanilla", "2 1/2 Tbsp. cocoa", "1/4 c. cornstarch or 4 to 5 Tbsp. flour", "3 c. milk"]
["Mix all ingredients well.", "Cook over medium heat until thick, stirring constantly.", "Pour into 2 baked pie crusts.", "Cover with whipped cream after pies have cooled."]
["sugar", "egg yolks", "margarine", "vanilla", "cocoa", "cornstarch", "milk"]