Mashed Potatoe Casserole

5 pounds potatoes (8 large)
8 oz of cream cheese, softened
1c. sour cream
2 tsp. garlic salt (optional)
1.2 tsp. pepper
1/4 c. butter
Peel potatoes and cook til tender then mash. In a small bowl
beat the cream cheese and sour cream til blended.
Add cream cheese mixture as well as the spices. Blend well
Turn into a 3-4 quart buttered casserole dish.
Cover with foil and bake @ 400 degrees for 50 to 60 mins.
Let it sit for a few minutes before serving.
Or cover and refrigerate for up to 3 days then cook it when needed.
May leave out the garlic if you don't want garlic potatoes.