In large bowl, beat egg whites until stiff peaks form; set aside. In small bowl, beat egg yolks. Mix in sweetened condensed milk. Gradually add lime peel and juice. Stir to combine well. Fold mixture into egg whites. Pour into crust. Freeze 3 hours. Let stand 15 minutes at room temperature before serving. Spread whipped topping on pie and garnish with candied lime slices.
Cajun Country -- New Iberia, Louisiana