Yogurt Pie
["2 (8 oz.) containers yogurt", "10 oz. Cool Whip", "2 graham cracker pie shells", "1 c. mashed or fresh fruit (optional)"]
["Mix all ingredients and pour in pie shell.", "Freeze 4 hours. Take out and let thaw until ready to serve."]
["containers yogurt", "graham cracker pie shells", "fresh fruit"]