1 deep dish pie crust
1 (13 oz.) can sweetened condensed milk
4 egg yolks - save white for meringue
1/2 c. key lime juice
4 oz. whipped topping
3 tbsp. sugar

Bake pie shell according to directions. Mix condensed milk and egg yolks until well blended. Add lime juice. Mix well. Fold in whipped topping. Whip egg whites until stiff; add 3 tablespoons sugar. Pour filling into cooled pie shell. Add meringue topping. Bake at 350 degrees until golden brown (about 15 minutes). Chill until ready to serve.