The Cheeseburger at Portillo’s is a better version of the standard hamburger. It is a juicy, flame-grilled beef patty with a nicely melted piece of American cheese on top. This burger comes on a soft, toasted bun and may be topped with fresh toppings like lettuce, tomato, onions, pickles, ketchup, and mustard. Each bite is rich, creamy, and fulfilling. It’s a straightforward choice that everyone loves.