Do-Ahead Mashed Potatoes - cooking recipe

Ingredients

5 lb. potatoes, peeled and quartered
1 c. sour cream
2 tsp. salt
1 egg
2 (3 oz.) pkg. cream cheese
2 tsp. onion salt
1/2 tsp. pepper
2 Tbsp. butter or margarine

Preparation

Cook potatoes; mash with electric mixer until there are no lumps.
Mix again, adding all ingredients; cool.
Put in a greased casserole.
Dot with butter.
Cook at 350\u00b0 for 40 minutes until heated through.
Cook uncovered.
Can be prepared a few days ahead and refrigerated until the day you want to serve them.
Serves 12.