I've had great experiences at this location of Shake Shack. They have a gluten-free bun, and they will activate an allergy protocol to prepare your burger. I make sure to order at the register with a real person at the counter (not one of the self checkout computers at the entrance) so I can explain what I need and ask questions. They have been very helpful and knowledgeable.
The fryer is shared, so I haven't gotten fries. And the Shacksauce has both spices and natural flavors, with no indication of gluten-free or not, so I skip that and just use ketchup. They have an allergen list online, so I double check that to be sure.
I loved Shake Shack before diagnosis, and it's delightful to still get to enjoy it!
Most Shake Shack locations offer gluten-free buns for burgers. A lettuce wrap is also an option.
Fries are not safe, but the gluten free bun is prepared separately and pretty decent. Yummy burgers! They put in an allergy order. Staff was knowledgeable and avoided cross-contact well. Shacksauce is unfortunately not gluten free either. Limited options, but a good burger!