Whopper Melts are back with a brand new Mushroom & Swiss twist! Our Whopper patty is topped with Swiss Cheese, Saut?ed Mushrooms, Caramelized Onions, and Royal Sauce, all served on a delicious Sourdough Bun. (Includes: Regular Swiss Cheese, Regular Royal Sauce?, Regular Saut?ed Mushrooms, Regular Caramelized Onions?) [Cal: 980-2353]