Potato Casserole - cooking recipe

Ingredients

6 potatoes
1/8 c. margarine
1/4 c. milk
4 oz. cream cheese
1/4 c. sour cream
1 egg
1/8 c. onion
1/2 tsp. salt
dash of pepper

Preparation

Cook and mash potatoes with margarine and milk.
Add remaining ingredients.
Refrigerate overnight.
Bake at 350\u00b0 for 45 minutes.
Good for do-it-ahead meals.