Preheat oven to 375°F (190°C). Line a baking sheet with parchment paper.
In a bowl, mix flour, baking powder, and salt.
Add Greek yogurt and mix until a dough forms.
Transfer dough to a lightly floured surface and knead gently for 1–2 minutes.
Divide dough into 4 equal pieces. Roll into balls, then poke a hole in the center to shape bagels.
Place bagels on the baking sheet. Brush with egg wash if desired and add toppings.
Bake for 22–25 minutes until golden and firm.
Let cool slightly before slicing and serving.