Preheat oven to 375°F (190°C) and line a baking sheet with parchment paper. As an alternative, preheat air fryer to 280°F (140°C).
Optional step. If you prefer a smoother texture or if are using large curd cottage cheese, blend it before mixing with the other ingredients. This will create a more uniform dough while keeping the same great taste.
In a large bowl, combine flour with baking powder and optionally salt. Add cottage cheese, then quickly stir until it comes to form a dough. Adjust with more flour if the dough is sticky or with a splash of milk if it is too dry.
Transfer dough over a clean floured surface and knead to form a soft ball. Divide into 4 equal size pieces.
One at a time, roll each piece of dough into a log about 6 inches (15 cm) in length and shape into a ring. If desired, brush the surface of each bagel with egg or egg white wash, then sprinkle your favorite toppings.