By roasting the pumpkin before blending it into this vibrant and smooth soup you are able to achieve another delicious layer of flavor that you cannot get when you simple boil the vegetables. Thyme and leeks each add their own unique flavors to the soup and perfectly complementing the pumpkin. Toasted pumpkin seeds sprinkled over the soup before serving add a nice crunchy contrast. Try it with a spoonful of goat cheese in each bowl for added creaminess.