Potato Casserole - cooking recipe

Ingredients

6 potatoes, boiled and seasoned
1 stick margarine
1 c. cheese
1 medium onion
1 (8 oz.) carton sour cream

Preparation

Mash potatoes.
Melt cheese and margarine together.
Mix all ingredients together and pour into a casserole dish.
Top with grated cheese.
Heat until warm.