Leftovers… they are going to occur sometime, especially around the holidays or other large group meals. Well, I had mashed potatoes left from the duchess potatoes I made for Christmas dinner, so I was challenged with what to make with them. In contemplating what dish to cook that would use up these delicious mashed potatoes, one thing came to mind… shepherd’s pie.  Easy to make and oh so delicious, now I am eager for dinner. Using frozen vegetables like petite corn and a pea and carrot mix just enhances the simplicity of this dish.  Of course I had some of my ground beef, pork, and lamb mix in the freezer as well, so all that was left was to put it together. Shall we…