Regardless of the size of your Thanksgiving gathering, one thing is always true: There will be leftovers. Some people, like my husband’s family, like the leftovers almost as much as the dinner themselves and roast the largest turkey they can so that there can be days of turkey sandwiches. Me? I tire quickly of eating the same foods, but what I do enjoy is making them over into something new and equally delicious. Turkey pot pie is one of those magical makeovers: If you made turkey, gravy, pie, and anything with herbs and mirepoix, then you actually have all the ingredients you’ll need to make a fresh-tasting dinner that’s just as good as the Thanksgiving meal itself. Here’s how to make this American classic, plus some tips on saving time with the prep (because you’ll probably be burned out with cooking after turkey day). How to Make Turkey Pot Pie …