Super Duper Potatoes

Directions

1. 1
   Cook potatoes in their jackets until tender (better to undercook than to overcook).
2. 2
   Put into refrigerator and chill for 24 hours.
3. 3
   Warm in saucepan the margarine, half and half and salt. Peel potatoes and grate into large bowl.
4. 4
   Pour half and half mixture over potatoes; add cheese.
5. 5
   Mix together and put into a 9 x 13-inch ungreased baking dish.
6. 6
   Bake at 350° for 1 hour, uncovered.