Disclaimer : I do not have Celiac, I have to follow the LowFODMAP diet, or else good makes me sick. So cross contamination is not something I would typically.
My husband really wanted a burger, so we decided to go to Smashburger. I knew from before offer a gluten free bun so I got that option. It looked very different from last year so I questioned it and was assured it was the GF Bun. Once I started to eat it I could tell right away it was as it crumbled very easily, and had the very distinct taste. Its very hard to know from their menu what is safe to eat and not, and I don't believe my food was prepared any differently than others.
— Good