Every froyo flavor is clearly marked if gluten free. I steer away from the buffer of toppings because it would be easy for cross contamination to occur.
They've marked the yogurts that are gluten free, delicious yogurt and safe! I do not get any toppings just in case.
I love that they have allergen information posted above each of the yogurt machines. They always have several gluten free options and even one option that is gluten free and dairy free. Just be vigilant with the toppings bar to ensure cross-contanimation doesn't get you. I am very picky about the toppings I use for this reason. But it is nice to be able to go out for dessert with my friends and family!