- 1 (9 inch) prepared graham cracker crust
- 3 eggs, separated
- 1 (14 ounce) can sweetened condensed milk
- 1 teaspoon grated lime zest
- 1/3 cup fresh lime juice
- 1 cup frozen whipped topping, thawed (optional)
- Preheat oven to 250 degrees F (125 degrees C).
- In a large glass or metal bowl, beat egg whites until stiff peaks form. Set aside.
- In a medium bowl, beat egg yolks, then stir in condensed milk, lime rind, and lime juice. Mix well, then fold mixture into beaten egg whites. Pour mixture into graham cracker crust.
- Bake in preheated oven for 10 minutes. Chill before serving. Garnish with whipped topping if desired.