This recipe has come the closest to my husband Nick's grandmas so it has become a staple at our holiday table. This is excellent for freezing and make ahead. NOTE: You can be creative and add whatever else you would like. For instance top with chives.
1. Cook potatoes in salted water until tender.
(About 10 minutes from time water gently boils) Drain.
2. Combine potatoes with salts, onion, butter, cream cheese, and sour cream.
3. Whip until mixture is smooth and fluffy.
4. Place in buttered 2-qt.
casserole.
5. Top with grated cheese if desired.
6. (May be covered and refrigerated overnight or frozen at this point, if desired)
7. Bake at 350 for 30 minutes or until golden brown.