Mashed Potato Casserole

Directions

1. 1
   Peel and cook 5 pounds of
2. 2
   baking potatoes until tender, about 40 minutes.
3. 3
   Drain, then mash well.
4. 4
   Beat together cream cheese and sour cream; gradually beat into mashed potatoes until smooth. Beat in garlic salt and pepper. Turn mixture into a buttered, shallow 3 to 4 quart casserole.
5. 5
   Dot with butter.
6. 6
   Cover and chill up to three days.
7. 7
   To reheat, bring to room temperature. Cover and bake in 400° oven for 50 to 60 minutes.
8. 8
   Serves 12 to 15.