Interestingly, I made this without having read the comments, was out of chicken stock, and just used water. To add flavor I used fresh orange instead of lemon, and a lot of it. I made the spicy pumpkin seeds to accompany it and made them extra spicy. We really enjoyed the soup as a light, healthy, zesty weeknight meal. It's not as flavorful/elegant as some other butternut squash soups, but it's not as heavy and time-intensive either.