6 large potatoes, peeled and quartered 
1 package (8 ounces) cream cheese, softened 
1 cup shredded cheddar cheese 
1/2 cup sour cream 
1/3 cup chopped onion 
1 large egg 
2 teaspoons salt 
1/2 teaspoon pepper 
Additional shredded cheddar cheese, optional
1Place potatoes in a large saucepan; cover with water. Cover and bring to a boil. Cook for 20 to 25 minutes or until very tender; drain well. 
2In a bowl, mash potatoes. Add cream cheese, cheddar cheese, sour cream, onion, egg, salt and pepper; beat until fluffy. Transfer to a greased 2-qt. baking dish. Cover and bake at 350° for 40 to 45 minutes or until heated through. Sprinkle with additional cheese if desired.
Total Time
Prep: 40 Min. Bake: 40 Min.
Forget everything else you know about mashed potatoes. These creamy, rich, cheesy mashed potatoes are the ultimate decadent side dish for get-togethers and gatherings. 
Nutrition Facts
3/4 cup: 328 calories, 14g fat (9g saturated fat), 66mg cholesterol, 633mg sodium, 42g carbohydrate (4g sugars, 4g fiber), 10g protein.