It's also a fab timesaver dish. Defrost a batch of Vegetable Chilli, make some mash and top it. Bung it in the oven for an hour and your done!
Its so easy, I don't need to even write the recipe!
Great when you're short of time or money. I reckon two pounds of spuds will cover it, so on a tight budget week, it's ideal. Or put what you have saved in your savings pot!