Preheat the oven to 375°F (190°C). Line a baking sheet with parchment paper.
In a large mixing bowl, combine the flour and sea salt, then add the cottage cheese.
Using your hands, mix and knead the ingredients in the bowl until they form a cohesive ball of dough. The mixture may look dry at first but will come together as you knead.
Divide the dough into four equal portions. Shape each portion into a ball, then press each ball into a flattened disc and press a hole through the center to form a bagel shape.
Arrange the four bagel rings on the prepared parchment-lined baking sheet, leaving space between them.
Whisk the large egg in a small bowl to make an egg wash. Use a brush to coat the top of each bagel ring with the beaten egg.
Sprinkle the everything bagel seasoning evenly over the egg-washed bagels.
Bake at 375°F for 22 minutes. Then increase the oven temperature to 450°F (230°C) and bake an additional 3–5 minutes, until the bagels are golden brown.
Remove the bagels from the oven and let them cool for at least 20 minutes before slicing in half and toasting or serving.