1 9-inch graham cracker piecrust
1 14-oz. can sweetened condensed milk
4 egg yolks
One half cup key lime juice
Whipped topping for garnish
Key lime slices
Place condensed milk, egg yolks and lime juice in a bowl and whisk together until mixture starts to thicken. Pour into piecrust and bake for 15 minutes at 350 degrees. Cool in the refrigerator overnight. Top with whipped cream if desired and key lime slices and serve.
Tip: Use fat free condensed milk, your favorite egg substitute and fat free whipped topping.