Baked Mashed Sour Cream Potatoes

Ingredients:

5 lbs. potatoes
1 c sour cream
1 t salt
2 small packages cream cheese
2 t onion salt
2 T margarine or butter

Instructions:

Boil and mash potatoes.  Add everything else.  Whip it all together in a mixer until light and fluffy.  Pour the potatoes into a greased casserole dish.  Dot the top with butter.  Cool in the refrigerator until just before the meal.

Bake at 350 degrees for 30 minutes.