Leftover Mashed Potato Soup

We can all agree that one of the best parts of Thanksgiving is the leftovers. Not only do you get to enjoy the delicious meal on the holiday, but also get to eat the leftovers in various forms over the next week. But what can be done with leftover mashed potatoes? Creamy mashed potato soup. This soup is incredibly easy and takes your favorite comfort side dish to a whole new level.