Well I did not actually "smoke" the shepherds pie, but it was made from smoked meat loaf.
We had some meat loaf left over and a need to cook something for my in-laws who came over the watch the Chargers lose.
We took the left over meat loaf dropped it in a pan, covered that with frozen peas and carrots (easy) and then covered it all with home made mashed red potatoes, skin left on. Cooked at 375 or so for about an hour added cheese for the last few mins.
Here is the outcome...