On September 18th, Smashburger will be celebrating National Cheeseburger Day by offering their customers an awesome buy one, get one free deal.

This promotion will be available both in-store at participating locations and online with the promo code: BOGO22! This deal gives customers the chance to mix & match single or double patties and mix & match any of Smashburger’s protein options like Crispy and Grilled Chicken, Turkey Burger or Black Bean Burger.