Prep the ingredients per the instructions above.
Prep the potatoes: Cut the potatoes into 1/4-inch thick sticks. Place into a large bowl and cover completely with cold water for 20 minutes (see note). Drain well and pat dry with a towel. While the potatoes are soaking, make the burger patties.
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).
Cook the fries: Place the fries in an air fryer and cook according to the directions in the manual. Approximately 20 minutes.
Lightly toast the buns.
Heat a grill or grill pan over medium heat.
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 cook until melted.
Compose the burger: Spread your favorite condiments on the inside of the bun. Place the patty on the bun with lettuce, tomato, and onion.
Serve: Enjoy the cheeseburger with french fries, ketchup, pickle, and soda.