- 1 1/2 pounds lean (at least 80%) ground beef
- 1 (9 ounce) pouch Progresso™ Recipe Starters™ creamy portabella mushroom cooking sauce
- 1/4 cup Progresso® Plain Bread Crumbs
- 2 teaspoons Montreal steak seasoning
- 6 (1 ounce) slices Swiss cheese
- 6 hamburger buns, split
- Garnishes, if desired:
- 12 frozen, breaded onion rings
- Heat gas or charcoal grill for direct heat. Carefully brush oil on grill rack. In large bowl, mix beef, 3/4 cup of the cooking sauce, the bread crumbs and steak seasoning. Shape mixture into 6 patties, about 1/2 inch thick. Spray both sides of patties with cooking spray.
- Place patties on grill over medium heat. Cover grill; cook 10 to 12 minutes, turning once, until meat thermometer inserted in center of patties reads 160 degrees F. Spread 1 1/2 teaspoons cooking sauce on each burger, and top with cheese slices during last 1 to 3 minutes of grilling or until cheese is melted.
- Meanwhile, heat onion rings as directed on package. Place patties on bottom halves of buns; top each with 2 onion rings. Top with tops of buns.