For a recently opened restaurant the food and service were good.
I had a coupon from previous visits to other Smashburgers, and using it was a breeze, unlike other new restaurants.
I have celiac disease and need the gluten-free bun and gluten-free preparation. Even though it was a busy time, the staff was careful about my food. That said, the milkshake had a too large amount of ice and the avocados on my burger weren't ripe. Otherwise, my burger was enjoyable.
My friend ordered a salad and enjoyed it. She cannot eat onions and asked for them not to be on her salad, but it came with onions. Pretty easy fix, though.
Overall both my friend and I enjoyed our experience at Smashburger. I think the restaurant will continue to improve as the crazy busyness of the first days wears off and a few improvements are made.