Classic Make-Ahead Mashed Potatoes

Directions

1. Place potatoes in a Dutch oven and cover with water. Bring to a boil. Reduce heat; cover and cook for 15-20 minutes or until tender. Drain.
2. In a large bowl, mash potatoes with cream cheese. Combine the egg whites, sour cream, onion powder, salt and pepper; stir into potatoes until blended. Transfer to a greased 3-qt. baking dish. Drizzle with butter. Cover and refrigerate overnight.
3. Remove from the refrigerator 30 minutes before baking. Preheat oven to 350°. Cover and bake 50 minutes. Uncover; bake 5-10 minutes longer or until a thermometer reads 160°.