Key Lime Pie
["1 (14 oz.) can condensed milk", "3 egg yolks", "1/2 c. lime juice", "8-inch graham cracker crust", "whipped topping"]
["In a large bowl, beat egg yolks, milk and lime juice with wire whisk.", "Pour into crust.", "Bake at 325\u00b0 for 30 minutes.", "Cool. Serve with whipped topping."]
["condensed milk", "egg yolks", "lime juice", "graham cracker crust", "topping"]