- Pierce the squash with a fork.
- Bake at 350°F. for 50 minutes or until the squash is fork-tender. Cut the squash in half and scoop out and discard the seeds. Scrape the flesh with a fork to separate the spaghetti-like strands.
- Heat the soup, water and milk in a 3-quart saucepan over medium heat to a boil. Stir in the Swiss cheese. Add the squash and toss to coat. Sprinkle with the Parmesan cheese and parsley.