This burger "works" from the inside out. All the great flavors that are usually on the roll are already inside the burger.
Mix ground beef, ketchup, bacon, Steak Seasoning and dill weed in large bowl. Shape into 4 patties. Brush onion slices with oil.
Grill patties and onion slices over medium heat 4 to 6 minutes per side or until burgers are cooked through (internal temperature of 160°F). Add cheese slices to burgers 1 minute before cooking is completed. Toast rolls on the grill, open-side down, about 30 seconds.
Serve burgers on toasted rolls with desired toppings and condiments.
Serving Suggestion: Serve burgers with lettuce, tomato, onion and desired condiments.