Heat Potatoes, Sauce Mix, water, cauliflower, mustard, pepper and broth to boiling in 3-quart saucepan over high heat, stirring frequently.
Reduce heat; cover and simmer about 25 minutes, stirring occasionally, until potatoes are tender.
Stir in ham and half-and-half. Cook uncovered about 5 minutes or just until hot (do not boil). Garnish with parsley.