I grew up with this, as well as the meat version which is called Panackelty, (Recipe #423393). It is a cheap and cheerful supper dish, that would satisfy the hungriest of workers and families. Layers of potatoes are fried with onions and cheese for a delectable supper dish, and one of my all time favourites. Historical note: This is a traditional Northumberland supper dish which is said to have taken its name from the French 'Hachis', meaning to chop or slice. Traditionally Pan Haggerty is always served directly from the pan in which it is cooked.