Preheat and prep: Heat oven to 375°F (190°C).
Line a baking sheet with parchment and lightly spray with oil to prevent sticking.
Mix the dry base: In a bowl, add self-rising flour and salt. Whisk to combine and break up any clumps.
Add yogurt: Stir in Greek yogurt with a spoon until a shaggy dough forms. If it’s too sticky, sprinkle in 1–2 tablespoons extra flour.
Knead briefly: Turn dough onto a lightly floured surface.
Knead 6–8 gentle turns until smooth. Don’t overwork or the bagels will be tough.
Divide and shape: Cut dough into 4 equal pieces. Roll each into a rope about 6–7 inches long, then pinch ends together to form a ring.
Smooth the seam well.
Egg wash and top: Place rings on the sheet. Brush with beaten egg (thinned with a teaspoon of water if thick). Sprinkle generously with your chosen toppings.
Bake: Bake 18–22 minutes until puffed and golden on top.
For a deeper color, switch to broil for the last 1–2 minutes, watching closely.
Cool slightly: Let bagels rest on the tray 5 minutes, then move to a rack. Slice once warm but not hot for clean cuts.