Mashed Potato Casserole

Ingredients:
- 8 large potatoes
- 2 Tbsp. onion salt
- 1 pt. sour cream
- 4 Tbsp. butter
- 1 c. grated cheese (Cheddar)

Directions:
- Peel and cook potatoes until soft.
- Mash with onion salt and sour cream.
- Add butter to mixture.
- Place in 2-quart casserole dish and top with cheese.
- Refrigerate overnight.
- Bake at 350° for one hour.