Preheat your oven to 300°F (150°C).

In a mixing bowl, combine the cottage cheese, egg yolks, sweetener (if using), salt, and vanilla extract. Blend until smooth.

In a separate bowl, whisk the egg whites and cream of tartar until stiff peaks form.

Fold a spoonful of the whipped egg whites into the cottage cheese mixture; then gently fold in the rest.

Spoon the mixture onto a lined baking sheet, leaving space between mounds.

Bake for 25–30 minutes until golden brown and centers feel firm.

Cool on the baking sheet for 5–10 minutes before serving.