Step 1

Preheat oven to 325 degrees F (165 degrees C). Mix graham cracker crumbs with sugar and melted butter. Press into 9 inch pie plate and bake for 5 minutes. Remove from oven and let cool.

Step 2

Separate 2 of the eggs, placing the two egg whites into a mixing bowl. Reserve the yolks in another bowl.

Step 3

To the yolks, add one whole egg, lime juice and sweetened condensed milk. Whisk until smooth. With clean mixer blades or a whisk attachment, beat the egg whites with salt and cream of tartar until stiff, but not dry. Fold whites into filling mixture. Pour filling into partially baked crust.

Step 4

Bake in preheated 325 degrees F (165 degrees C) for 10 to 15 minutes or until set. Let cool at room temperature, then freeze 4 hours to overnight. Just before serving, whip cream to form stiff peaks. Serve decorated with whipped cream and lime slices.