INGREDIENTS:
- 2 pounds ground beef (85-percent lean)
- Kosher salt and freshly ground black pepper
- 1/4 cup dijon mustard
- 3 tablespoons soy sauce
- 1 teaspoon sugar
- 6 slices Swiss cheese
- 1 tablespoon olive oil
- 8 ounces chopped baby bella or cremini mushrooms
- 2 teaspoons fresh thyme leaves or 1 teaspoon dried
- 2 cloves garlic, minced
- 6 yeasty buns
- Heat FIREDISC® to medium-high heat. Form beef into six burgers. Sprinkle with salt and pepper.
- Mix together mustard, soy sauce, and sugar in a small bowl. Grill burgers until desired doneness. (4 to 5 minutes per side for medium-rare, brushing the burgers with the glaze about halfway through.)
- A minute before removing burgers from FIREDISC®, top with cheese and move to the outer ring. Pour oil in the middle of FIREDISC® on medium-high heat. Cook mushrooms until beginning to soften, about 5 minutes.
- Add thyme and garlic. Cook until mushrooms are soft, about 3 minutes more. Season with salt and pepper.
- Toast buns on the middle ring of FIREDISC®. Serve burgers with the mushroom topping.