Smashburger is celebrating its 15th Anniversary by offering any single burger, including any single Cheesy Caramelized Onion Smash for $5.15 all weekend long starting Friday, July 22 through Sunday, July 24, 2022.
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To take advantage of the offer, simply mention of the promotion to your cashier when ordering in-restaurant, or use promo code “15YEARS” when ordering online or via the brand’s mobile app.
The Cheesy Caramelized Onion Smash features a Certified Angus Beef patty, topped with melted cheddar cheese, aged Swiss cheese, caramelized onions, tomatoes, lettuce, and mayo, all on a toasted onion bun.
In addition to being customizable, when ordering the new Cheesy Caramelized Onion Smash, fans will also have the choice to pick any of these protein options: Grilled Chicken, Crispy Chicken, Turkey Burger Patty or Black Bean Patty.
Smashburger’s 15th anniversary special is valid at participating locations nationwide.
Image via Smashburger