Mashed Potato Casserole

This is a great make-ahead casserole - make as little or as much as you want. It taste's just like "dressed" bake potatoes

Potatoes -- boiled
Butter
Milk
Green Onions
Grated Cheddar Cheese
Sour Cream
Crumbled Bacon -- Optional

Cook and mash potatoes with butter and milk until stiff. Add sour cream until mixture is consistency desired for mashed potatoes. Add 1 bunch of sliced green onions and bacon if desired. Put into a casserole dish and "ice" it with a thin layer of additional sour cream. You can refrigerate it at this point until ready to cook. Turn oven to 350° and bake potato casserole for about 20 minutes or until heated through. Remove from oven and add grated cheese. Return to oven and cook an additional 10 minutes or until cheese is melted and casserole is hot.