1. Place potatoes in a large stock pot with enough cold water to cover potatoes. 2. Bring potatoes to a boil and reduce heat to low and continue cooking for 15 to 20 minutes or until potatoes are fork tender. Drain potatoes and place in large mixing bowl. 3. Heat heavy cream and butter in a medium saucepan over low heat until butter is melted and warm. 4. Carefully add the warm cream and butter mixture and the Parmesan cheese to the potatoes, then heat the potatoes with an electric mixer on low speed for 2 to 3 minutes or until blended. 5. Add salt and pepper and increase speed to high and heat for another 1 to 2 minutes or until smooth and creamy.