Three-Cheese Mashed Potato Casserole

• 4 large potatoes, peeled and cubed*
• 1 cup sour cream
• 1 (3-ounce) package cream cheese, softened
• 1/4 cup butter or margarine, softened
• 2/3 cup milk
• 1/2 cup (2 ounces) shredded Cheddar cheese
• 1/2 cup (2 ounces) shredded Muenster cheese
• 1 1/2 teaspoons salt
• 1/2 teaspoon pepper

1. Cook potatoes in boiling water to cover 15 minutes or until tender. Drain.
2. Beat potatoes and next 3 ingredients at medium speed with an electric mixer until smooth. Stir in milk and remaining ingredients. Spoon into a lightly greased 2-quart baking dish. (Cover and chill 8 hours, if desired; let stand at room temperature 30 minutes before baking.)
3. Bake, uncovered, at 400u0b0 for 15 to 20 minutes or until thoroughly heated.
4. *Frozen mashed potatoes may be substituted. Prepare potatoes according to package directions for 4 servings. Proceed with recipe as directed. For testing purposes only, we used Ore Ida Mashed Potatoes.

potatoes, sour cream, cream cheese, butter, milk, cheddar cheese, muenster cheese, salt, pepper

Taken from www.myrecipes.com/recipe/three-cheese-mashed-potato-casserole (may not work)