Smashburger Truffle Mushroom & Swiss Burgers contain between 690-910 calories, depending on your choice of size. The size with the fewest calories is the Small Smash Truffle Mushroom & Swiss Burger (690 calories), while the Big Smash Truffle Mushroom & Swiss Burger contains the most calories (910 calories).
Choose from the sizes below to see the full nutrition facts, ingredients and allergen information.
