Preheat oven to 375° F. Place Perfect Portion Bagel & Donut Pan on Sheet Pan. Lightly brush bagel pan with oil; set aside.
Place mix in a bowl (if using flour instead of mix, whisk together flour, baking powder, and salt). Make a well in centre; add yogurt. Using a fork, mix until combined. Dough will be crumbly.
Knead dough in bowl a few times until it comes together in a ball. Dough should be tacky, but not sticky. Cover and let stand 10 min.
Turn onto floured counter; knead 2–3 times, flatten slightly. Add more mix as needed, if dough is sticky. Cut into 6 wedges. Roll into ropes, each about 7" long.
Lay ropes in pan; pinch ends to seal. Brush with egg, if using. Sprinkle with topper.
Bake in oven until puffy and golden, 15–18 min. Cool; pop out.