Ah yes, the cold is finally upon us! Running outside is easy and a tasty hot soup is a delight for the senses. This warm, comforting winter soup will make you think it's summer with it's bright, tangy flavor! Using the some of best of what winter has to offer -- butternut squash and apples stored from the fall harvest -- combined with delicious southwestern spices, this sweet and sour soup has a vibrant flavor that will wake you up out of the winter doldrums while still giving you that hot, comforting bowl of soup you've been craving.