In a bowl, mix together ground oats, spelt flour, cornstarch, baking powder and salt. Mix well.
Add the greek yogurt and using a form mix until the dough starts to form.
Transfer the dough to the floured surface and press couple of times, but no more. (you don't have to really knead the dough)
Cut the dough into a 8 equal pieces and rolling into a ropes form a bagels.
Place onto a lined baking tray, let it sit for 5-10 minutes, brush with the egg wash or olive oil and spinkle with Everything bagel seasoning or any seeds you like.
Bake at 375F (190C) for 25 minutes.
Let it cool for 15 minutes and you can enjoy fresh and delicious bagels.