I have to second the baking of the potatoes ahead of time. If we have baked potatoes, I always make extra for fried potatoes. They are much better and don't stick nearly as much. In fact, if I make a roast with potatoes, I cube up the extra potatoes and roast and fry it all together for a dinner of hash. My family wants me to make a roast just for the crispy hash the next day.