Ingredients:
8 Potatoes
1 -2 Sour Cream
1 Butter
4 Cheddar Cheese
1 Colby Cheese
Directions:
Peel and cook potatoes until tender.
Mash potatoes with onion salt and sour cream.
Add butter.
Place in a 2 quart casserole dish and press down slightly.
Top with cheese. Refrigerate overnight. Bake at 350°F for 1 hour.