5 egg yolks, beaten
1 14-ounce can sweetened condensed milk
1/2 cup key lime juice
1 9-inch prepared graham cracker crust
Whipped topping, as desired
Lime slices, for garnish
Preheat oven to 375 degrees. Combine egg yolks, sweetened condensed milk and lime juice. Mix well. Pour into unbaked graham cracker shell. Bake in preheated oven for 15 minutes. Allow to cool. Top with whipped topping and garnish with lime slices, if desired.