If you are looking for a great toasted sub sandwich, I encourage you to try Planet Sub downtown. I'd challenge anyone to find a better GF sub in STL. The owner is great and takes care to limit cross-contamination. The GF bread is soft and holds up well. They make it and bake it first before doing any gluten bread. I've been a GF customer of theirs for many years.
— No gluten-free information on the menu