Preheat the oven to 375F and line a baking sheet with parchment paper.
Wash blueberries and place a saucepan over medium-high heat. Add in the blueberries and let the small amount of water from washing heat up.
5 minutes in, the blueberries will start softening, take out your fork and squish them. Cook for another 2 minutes to let the water evaporate. Now, take the saucepan off the stove and leave the blueberries to cool down.
In a large bowl, add cottage cheese, flour, baking powder, and sea salt. Mix with a spatula or spoon until the mixture forms a thick dough.
Then, knead the dough with your hands and add in the blueberries. Knead them into the dough.
Flour the surface and place the dough on it, flour it, and knead until the dough is possible to work with, it will be sticky though.
Form the dough into a ball and cut into 4 quarters. Now roll each quarter into a flat ball and poke a hole in each of them. Roll them until the hole is around 2 inches in diameter.
Place on the baking sheet.
Using a brush, cover the bagels with egg and sprinkle with mixed seeds.
Bake in the oven for 25 minutes until the bagels rise and golden on the top. Let them cool down before serving.