I got this from the GlutenFreeCooking website. I’ll just give you the quickie version.

Equal parts gluten-free flour, cornstarch, and club soda. Season with salt, garlic powder, onion powder, paprika. Slice your onion and separate into rings. Dip into the coating mixture, and fry in deep oil. I found the mixture seized up unless I added more liquid (I used sparkling mineral water, maybe that’s why.) Also, they didn’t puff up quite like this picture, but they were so good. I hardly got to eat any of them – hubby was gobbling them up, and he’s not even a gluten-free eater! Enjoy!