Low Fat Key Lime Pie
["1 reduced fat graham pie crust", "1 can Fat Free Eagle Brand condensed milk", "3 egg yolks", "1/2 lime juice", "yellow or green food coloring, optional", "small carton Cool Whip Free"]
["Preheat oven to 325 degrees.", "In a large bowl, beat egg yolks with condensed milk, using wire whisk.", "Stir in lime juice and food coloring.", "Pour into pie crust and bake for 40 minutes.", "When cool, top with Cool Whip.", "Refrigerate until ready to serve."]
["graham pie crust", "milk", "egg yolks", "lime juice"]