Getting a bit more up-market, Shepherd's pie

Well, quite often to break the monotony, my mum transformed our plain mince and tatties into a more up-market dish called Shepherd's pie.  It's basically mince and mashed potatoes with a topping which can be heated up in the oven or browned under the grill.  You get an oven dish and pour in your mince and on top of this you put a layer of mashed potatoes which is covered with grated cheese, usually cheddar.  Then you serve it with your favourite sauce.  And you all know which one mine is!!