Mix together the ground beef, steak seasoning, and Worcestershire sauce. Form into even patties. Transfer to a plate, cover with plastic wrap, and reserve in the fridge until you are ready to cook (see note).
Prep vegetables for cheeseburger per instruction above.
Lightly toast the buns in a toaster oven.
Heat a grill on medium heat.
Grill the corn on all sides until nicely charred and tender.
Once the corn is starting to become tender, cook the burger patties: add the patties to the grill and cook on both sides, getting a nice crusty char to the desired doneness (see note) using a thermometer. When the burger is 3/4 of the way cooked to your liking, add the cheese and cover with a lid to melt.
Once the corn is cooked, lather with butter and lightly season with salt.
Compose the burger: Place the lettuce, tomato, burger and onion on the bun.
Serve the burger with ketchup, pickle, corn, and soda.