Whether you call it an onion boil or a baked onion, this tender, juicy side is a classic for a reason. Julia is an experienced cook with a demonstrated history of working in the publishing industry.
Add onion, fennel, celery ... flour; set aside. Cut 1 cup of squash cubes in half. Cook pasta per package directions; add cut-up squash during last 4 minutes of cooking. Drain pasta and squash.