Cook cauliflower in boiling salted water. Drain, reserving water. Melt butter, add onion and cook until soft. Blend in flour, add broth and stir constantly until mixture comes to a boil. Stir in 1 cup liquid drained from cauliflower (add water if necessary to make 1 cup), Half and Half, Worcestershire sauce and salt. Add cauliflower. Heat to boiling. Stir in cheese. Serve sprinkled with parsley.
SERVINGS: 8 – 10