In our house, Fall doesn't begin officially until the first pot of butternut squash soup hits the stove. Most often, I combine butternut (my favorite, though buttercup, acorn or Hubbard are wonderful substitutes) with apples from our local orchards, and bind them together with Indian curry spices like cumin, coriander and turmeric. Lately, I've been craving the raw heat of Thai red curry paste, and that sent this year's butternut squash soup in a new direction. (The recipe calls for a tablespoon of curry paste, which won't make the soup very spicy, but please use half that amount if you're worried about too much heat. You can always add more.) The thick and creamy soup is vegan, gluten-free and dairy-free, thanks to coconut milk. A little bit of brown sugar and a hit of fresh lime juice add a light, bright finish. If you're doing a soup swap this winter, put this soup on your make-ahead-and-freeze list.