Pre-heat oven to 350° F.
Place parchment paper on the sheet pan and spray with non-stick spray.
Sift the all-purpose flour into a medium sized bowl. Whisk in the baking powder and salt into your flour. Make a well in the center of your flour mixture.
Measure out your greek yogurt- see notes. Add greek yogurt to the flour mixture and, using a wooden spoon or rubber spatula, stir to combine.
Once most of the flour has been incorperated into your dough ball, switch to using your clean hands and start to knead your dough. Knead your dough on a lightly floured surface for about 45 seconds until dough is firm. If dough is still sticky, add more flour and knead to incorperate. Roll into a large ball.
Using a knife or bench scrapper cut your dough into six even pieces and roll each individual piece into a ball. Using your pointer finger, dip your finger into some flour and poke a hole through the dough ball. Use both of your hands widen the hole. Do this with all six of your dough balls.
Once you have done this to all of your dough balls, place them onto the prepared sheet pan. Place a kitchen towel over them and let them rest for a half and hour.
Mix together the egg and the water to create your egg wash. Brush egg wash over the top of your bagels. If you want plain bagels, leave them like this. If you want everything bagels, sprinkle with everything bagel seasoning. See notes.
Bake bagels at 350°F for 20 minutes. Rotate pan. Bake for another 20 minutes. Turn up the heat of your oven to 400°F and bake for an additional 5 to 10 mintutes until your bagels are golden brown.