Prepare potatoes according to package directions.
Stir in cream cheese and next 5 ingredients. Divide mixture evenly between 6 (6-ounce) lightly greased ramekins or custard cups. Sprinkle evenly with Cheddar cheese.
Bake at 350° for 20 minutes or until thoroughly heated.
Note: For testing purposes only, we used Ore-Ida Frozen Mashed Potatoes.