Black Forest Pie
["3/4 c. sugar", "1/3 c. baking cocoa", "2 Tbsp. flour", "1/3 c. milk", "1/4 c. margarine", "2 eggs, lightly beaten", "1 (21 oz.) can cherry pie filling, divided", "1 (9-inch) unbaked pie shell", "whipped topping (optional)"]
["In a saucepan, combine sugar, cocoa, flour and milk until it is smooth.", "Add butter.", "Bring to a boil; cook and stir for 2 minutes or until thickened.", "Remove from the heat.", "Stir a small amount of hot mixture into eggs.", "Return all to the saucepan. Fold in half of the pie filling.", "Pour into pie shell.", "Bake at 350\u00b0 for 35 to 40 minutes or until filling is almost set.", "Cool completely on a wire rack.", "Just before serving, top with remaining pie filling and whipped topping, if desired.", "Yield: 6 to 8 servings."]
["sugar", "baking cocoa", "flour", "milk", "margarine", "eggs", "cherry pie filling", "shell", "topping"]