1 Preheat the oven to 275° F.
2 Lightly grease a 3 round layer cake pans with butter.
3 In a bowl, beat egg whites until they form soft peaks.
4 Add 1 packet sugar substitute and beat until stiff.
5 Divide the whites equally among 3 pans.
6 Place in the oven and bake for 45 minutes.