Mushroom Swiss Burger From Best Meals Happen At Home

INGREDIENTS
 
1½  lb. lean (at least 80%) ground beef
2     pouches (9 oz.) Progresso™ Recipe Starters™ creamy
¼    portabella mushroom cooking sauce
2     tsp. Montreal steak seasoning
6     slices (1 oz. each) Swiss cheese
6     hamburger buns, split
Garnishes, If Desired
12   frozen breaded onion rings (from 14-16 oz. package)

 
DIRECTIONS
 
1. Heat gas or charcoal grill for direct heat. Carefully brush oil on grill rack.
    In large bowl, mix beef, ¾ cup of the cooking sauce and the steak 
    seasoning. Shape mixture into 6 patties, about ½ inch thick. Spray both 
    sides of patties with cooking spray.
2. 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°F. Add cheese slices during last 1 to 3 minutes of grilling or until cheese
    is melted.
3. 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. If desired; 
    heat remaining sauce until hot and serve with burgers (or reserve for
    another use).