Fruit 'N Yogurt Pie
["2 (8 oz. each) containers fruit yogurt", "mashed fruit (optional): 1/2 c. mashed strawberries, raspberries, blueberries, crushed pineapple (8 1/4 oz.)", "1 (8 oz.) container Cool Whip, softened", "2 (8 or 9-inch) graham cracker crust pie shells"]
["Fold yogurt, fruit and Cool Whip, blending well.", "Spoon into crust.", "Freeze until firm, about 4 hours.", "Remove from freezer and place in refrigerator 30 minutes before cutting.", "Store leftovers in freezer."]
["containers fruit yogurt", "mashed fruit", "graham cracker crust pie shells"]