Cut potatoes into quarters. Combine potatoes and enough water to cover in a large saucepan. Bring to a boil over medium-high heat. Cook until tender, about 5 minutes; drain. Arrange in a 1 1/2-quart baking pan.
3
Combine 1/2 cup Cheddar, salad dressing, sour cream, bacon bits, and parsley in a medium bowl and mix well. Spoon over potatoes and mix gently.
4
Combine cornflakes, butter and remaining Cheddar in a medium bowl and mix well.
5
Sprinkle cornflake mixture on top of potato mixture. Bake until golden, about 30 minutes. Serve hot.