There is something so warm and comforting about a big bowl of hot and creamy potato leek soup on a fall day. It's one of those heartwarming soups that bring back pleasant childhood memories for many people. It's also a recipe you can make gluten-free with ease and prepare with only a few ingredients. If you are avoiding dairy as well as gluten, use light coconut milk and olive oil to replace the milk and butter in this recipe for gluten-free potato leek soup. The results are equally comforting.