Make-Ahead Mashed Potatoes - cooking recipe

Ingredients

5 lb. (9 large) potatoes
1 pt. sour cream
6 oz. cream cheese
2 Tbsp. butter
2 tsp. onion salt
1 tsp. salt
1/4 tsp. pepper

Preparation

Peel potatoes; cook in salted, boiling water.
Mash until smooth.
Add rest of ingredients and beat until light and fluffy. Place in greased casserole; dot with butter.
Bake at 350\u00b0 for 30 minutes.