Get you grill heated up to just under 350 degrees F.
In a bowl, hand mix ground beef, Worcestershire, and minced onions. Form into four patties.
Put patties on grill and cook them to your desired level of doneness, about 6 minutes per side. About 2 minutes before you are ready to pull them off, throw a slice of cheese on each patty.
When the patties are done and the cheese is nicely melted, take them off the grill. Serve with potato buns and a little bit of EVERYTHING from the remaining ingredients! Don't leave out anything (including the avocados)! ENJOY!!!