1 med onion
2 lbs. ground round
4 Tbsp. (or 1/4 cup) barbecue sauce
1 tsp. salt
1/2 tsp. pepper
1/2 lb. (or 2 cups) shredded Monterrey Jack cheese
8 hamburger buns
Finely chop onion. Combine onion, ground round, barbecue sauce, cheese, salt and pepper in bowl; mix well. Divide mixture into 8 equal portions. Form each portion into a flat patty.
Place 2 levels of 4 patties each on freezer paper or wax paper. Place in gallon size plastic resealable freezer bag. Lay flat in freezer to freeze.
Heat in pan or on grill over medium-high heat, turning once, until done: 5 minutes per side for well done. Serve on hamburger buns.