1Stir together Potatoes, Sauce Mix, hot water and milk in 10-inch skillet; stir in frozen peas until separated.
2Heat to boiling; reduce heat. Cover and simmer 25 minutes, stirring occasionally, until potatoes are tender.
3Stir in hot dogs; cover and heat 3 to 4 minutes or just until hot dogs are hot. Sprinkle cheese over mixture. Cover; let stand about 5 minutes or until cheese is melted.