Chocolate Pie
["1/2 c. Hershey's cocoa", "1 1/4 c. sugar", "1/3 c. cornstarch", "1/4 tsp. salt", "3 c. milk", "3 Tbsp. butter", "1 1/2 tsp. vanilla", "Cool Whip topping (for top of pie)", "1 (9-inch) baked pastry shell or crumb crust"]
["Combine cocoa, sugar, salt and cornstarch in a medium saucepan. Gradually blend milk into dry ingredients, stirring until smooth. Cook over medium heat, stirring constantly, until filling boils. Boil 1 minute.", "Remove from heat.", "Blend in butter and vanilla. Pour into crust.", "Carefully press plastic wrap directly onto pie filling.", "Cool; chill 3 to 4 hours.", "Garnish with Cool Whip."]
["cocoa", "sugar", "cornstarch", "salt", "milk", "butter", "vanilla", "topping", "pastry shell"]