Preheat oven to 375F and line baking sheet with parchment.
Whisk together flour, baking powder and salt. Add greek yogurt (plus mix-ins for cinnamon raisin or jalapeño cheddar bagels) and stir until a dough forms.
Lightly grease or dust counter surface with flour, then knead dough for a couple minutes to combine everything.
To form the bagels, divide into 4 pieces, roll each into a long cylinder and connect the ends, gently pinching together. Place onto parchment lined baking sheet and brush with egg wash.
Top with either everything bagel seasoning, sesame seeds, cinnamon + sweetener, or more jalapeño and cheese, based on the flavor you'd like. Bake for 27-30 minutes, until risen and golden brown.
