I recently saw a Smashburger in my area, and immediately inquired regarding any potential gluten free options they might have. A new burger joint chain to the Sacramento area, with one location in Citrus Heights, and a Folsom and a Roseville location to come soon, it would certainly be nice to add as a option, but sadly it doesn't look like that will be happening for those of us who are gluten free.
The company's response was as follows:
"Thank you for taking the time to contact smashburger where we strive to be every city’s favorite burger place. In response to your question - our burger spices contain gluten. Since all the meat is cooked on the same grill, there is a small risk of cross-contamination (meaning no smashchicken either). Our fries do not have any gluten products but do use the same fryer as our haystack onions and chicken tenders, both of which contain gluten so there is a small risk of cross-contamination in the fryer as well. One of our fine salads without the meat would be a great gluten-free option. (but what of the salad dressing?) I hate to discourage anyone from ordering items at smashburger but your health comes first."
So essentially a plain, boring salad would be your only option here. Too Bad!