Call ahead.
They get their GF donuts, cinnamon rolls, and pop tarts from an offsite bakery, and they usually stock mid-week, at least currently. All of that is kept in a separate display.
When they're fresh, the donuts are amazingly cakey. If they somehow happen to have any after a few days (which is rare in my experience), they do tend to get a bit dry, but they're still good.
This is the only donut shop I've been to that I've thoroughly enjoyed the options, and I believe it's also the only place in Kansas City with gluten free donuts outside of a grocery freezer section.
Call ahead and get one if they have any.
— Somewhat
— Separate gluten-free menu
— Not Much
— Excellent