Sunday Dinner Mashed Potatoes

Directions

1. Place potatoes in a Dutch oven; cover with water. Cover and bring to a boil. Cook until very tender, 20-25 minutes; drain well.
2. In a large bowl, mash potatoes. Add the sour cream, cream cheese, 2 tablespoons butter, salt, onion salt and pepper; beat until fluffy.
3. Transfer to a greased 2-qt. baking dish. Dot with the remaining butter. Bake, uncovered, at 350° until heated through, 20-25 minutes.