In a large bowl, combine the hamburger meat and the oniens. Shape
into four patties.
Grill burgers, covered, over medium heat or broil 3 in. from the
heat for 4-7 minutes on each side or until a thermometer reads 160°
and juices run clear. Top with cheese. Grill 1 minute longer or
until cheese is melted.
Serve on a bun with some mayonnaise, lettuce and tomatoes