Before You Begin
Preheat and prepare your cookware as needed. Cooking times and results may vary depending on your equipment and ingredients. Position oven rack in center for even baking.
Combine flour, Greek yogurt, and optional protein powder in a bowl until a shaggy dough forms.
Transfer dough to a lightly floured surface and knead for 2–3 minutes until smooth.
Divide dough into 4 equal portions. Roll each into a rope and connect ends to form bagel shapes.
Place bagels on a parchment-lined baking sheet. Brush tops with beaten egg and add toppings if desired.
Bake at 375°F (190°C) for 20–25 minutes until golden brown on top and lightly browned underneath. Bagels should feel firm when tapped.
Cool 5–10 minutes before slicing and serving.