Place Greek yoghurt in a mixing bowl and give it a stir. Add in 1 cup of flour and stir to combine. Gradually add in more flour until the dough starts to form into a ball.

Tip the dough onto a well-floured surface and knead with your hands for a minute or two. If the dough is still too sticky, add some more flour and continue to knead. The dough is ready when it is able to hold its shape and is not sticking to your hands or the surface.

Cut the dough into 6 even pieces, then roll out each piece into a long strip before combining the ends to make a circle.  Brush the bagels with the egg wash, then sprinkle desired topping over the top.

Place the bagels in an air fryer basket, leaving some space in between each bagel so it has some room to rise.  If you have a smaller basket-style air fryer you'll need to cook in 2 batches.  Cook on 180C / 350F for 7-10 minutes, until the bagels are golden and cooked through.

Place the bagels on a cooling rack until ready to use and serve as is or as a breakfast sandwich.