Pan haggerty is a traditional dish originating from Northumberland, but it’s enjoyed throughout the United Kingdom in numerous variations. The dish is usually prepared with a combination of sliced potatoes, onions, butter, salt, pepper, and shredded cheddar cheese.
The potato and onion slices are layered in a baking dish, dotted with butter, and seasoned with salt and pepper. The dish is covered and baked until the potatoes and onions become tender. It is then uncovered, sprinkled with the cheese, and baked again until the cheese becomes lightly browned.