McDonald’s Philly Cheese Stack is a limited-time burger in the UK menu known for its rich, cheesy flavour and hearty ingredients. It features two beef patties layered with cheddar cheese sauce, a slice of melted cheese, crispy and grilled onions, pickles, and a soft sesame bun. The burger is designed to give a strong “cheese stack” experience with multiple cheese elements and a filling taste. In the UK, the price is usually around £5.79 for the burger on its own, while a medium meal costs about £8.59 and a large meal is around £9.39, though prices can vary by location. It contains roughly 630–640 calories and is available for a limited time as part of McDonald’s special menu rotations.