Almost any winter squash can be substituted. For a faster preparation, use three 10- to 12-ounce packages frozen cooked squash puree.
Prepare Baked or Roasted Winter Squash II, using:
If desired, reserve and toast the seeds. Heat in a soup pot over medium heat:
Add and cook, stirring, until the leeks are tender but not browned, about 5 minutes:
Scrape the cooked squash flesh from the skin and stir it in along with:
Bring to a simmer and cook for 20 minutes to marry the flavors, stirring and breaking up the squash with a spoon. Puree the soup with an immersion blender (or in batches in a food processor or regular blender) until smooth. Return to the pot and stir in:
Heat through. Serve garnished with: