If someone ordered a cheeseburger at a steakhouse, you'd have to imagine that was a mighty good cheeseburger. Maybe even as good as this one! Heat grill to medium heat.Combine tomatoes, dressing and 1/2 tsp. steak sauce. Mix meat, onions and remaining steak sauce; shape into 4 (1/2-inch-thick) oval patties. Grill p….