Here's the recipe I use.

6 egg whites
4 egg yolks
1/4 teaspoon cream of tartar
3 oz (~6 tablespoons) cream cheese
1 packet splenda
dash of salt

Basically following the same directions above. Beat the whites and cream of tartar until very stiff. Mix the yolks, softened cream cheese, splenda and salt. Fold together gently and pile on parchment paper-lined cookie sheet. Bake at 300 for 45 minutes to an hour (depending on oven).