Potato Casserole

5 large potatoes
1/2 cup sour cream
1/2 tsp salt
2 tbsp butter
1 3oz package cream cheese
1 tsp chives (chopped)
Pepper (to taste)
Grated Parmesan cheese


Boil and mash potatoes.  Blend rest of ingredients except grated Parmesan cheese together and add to potatoes.  Put mixture into buttered casserole dish and cook for 30 minutes @350F.  Sprinkle top with grated Parmesan cheese.  Can be prepared ahead and frozen if desired.