Pretty awful. I've been to three or four Smashburger restaurants and all were pretty good. Seem a bit pricey but that's how the fast casual burger joints seem to get down these days.
I went on a Saturday to get some take out. Showed up right bout 5pm and it was empty. Girl behind the cash register was "on break". Confusing. Another girl stepped up a minute later to take my order.
I waited about 15 mins for my order to come out, the entire time the kitchen staff was playing grabass and doing everything but cooking my order. Tots were crazy greasy. Burgers had way, way, way too much ketchup and mustard. Made the buns super soggy.
I'll make my burgers at home for a fraction of the price. That place has absolutely no management. I'm not sure who is supervising the teenage clowns in there, but I am sure they should be fired.