Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a mixing bowl, beat the egg whites until stiff peaks form. In another bowl, combine the egg yolks, cottage cheese, blueberries, baking powder, vanilla extract, and cinnamon. Gently fold the egg whites into the yolk mixture until just combined.
Drop spoonfuls of the mixture onto the prepared baking sheet and shape into rounds.
Bake for 25 minutes or until golden. Allow to cool before serving.
Notes
Serve with additional blueberries or a drizzle of honey if desired.