McDonalds presents another variant of their cheeseburger: the Smoky Cheeseburger. It has a beef patty, a slice of cheese, caramelized onions, and a creamy, smoky sauce.
It's delicious! The sweet and smoky flavors of the sauce complements the taste of the meat. The caramelized onions are too few to be notable to the palate, but OK, nice effort to have them.
Try it and judge for yourself.