Preheat your oven to 300°F (150°C) and line a baking sheet with parchment paper.
In a clean, dry bowl, beat the egg whites and cream of tartar with an electric mixer until stiff peaks form.
In another bowl, combine the egg yolks, softened cream cheese, erythritol, baking powder, and a pinch of salt. Mix until you get a smooth and consistent paste.
Carefully fold the egg yolk mixture into the whipped egg whites, taking care not to deflate the whites. Gently mix until fully incorporated.
Spoon the mixture onto the prepared baking sheet, forming 6 even rounds.
Bake in the preheated oven for about 30 minutes or until golden brown.
Allow the cloud bread to cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.
Notes
Make sure your bowl and beaters are clean and dry before whipping the egg whites to help them reach the desired volume.Cloud bread can be stored in an airtight container for up to 3 days at room temperature or up to 7 days in the refrigerator.For a dairy-free version, replace cream cheese with a dairy-free alternative.This cloud bread can also be toasted for a crispier texture.