Party Potatoes - cooking recipe

Ingredients

5 lbs red potatoes (I peel about half and leave the peel on half and cut into quarters)
8 ounces cream cheese
1 cup sour cream
2 teaspoons garlic salt
1 teaspoon salt
1/4 teaspoon ground black pepper
4 tablespoons butter (divided with 2T in the potatoes and the other 2T dotting the top of the casserole before baking)
milk (if potatoes seem too dry for your tastes) or sour cream (if potatoes seem too dry for your tastes)

Preparation

Lightly grease a 9 X 13 cake pan. Bring a large pot of lightly salted water to a boil. Cook potatoes in boiling water until tender. Drain, and transfer to a large mixing bowl. Mash until smooth. Stir in cream cheese, sour cream, garlic salt, salt, pepper and 2 tablespoons of the butter. Beat until light and fluffy. Add additional sour cream or milk if the potatoes are too dry for your tastes. Transfer to the prepared casserole dish.
Refrigerate overnight.
Remove from the refrigerator, preheat oven to 350 degrees F. Dot casserole with the remaining 2 tablespoons of butter.
Bake for 30 - 40 minutes or until heated through.