Combine cauliflower, chicken broth, onion and celery in 4-quart saucepan. Cook for 10 to 15 minutes or until cauliflower is tender.
Add potatoes au gratin, milk, ham, potato flakes and nutmeg. Cook until hot and mixture just comes to a gentle boil. Cook for 5 to 10 minutes or until of desired consistency. Season with salt and ground black pepper.Servings: 6