While potatoes are still warm scoop out the pulp of the potato leaving about a 1/4 inch to form a shell.

Place in a bowl and gently mash, set aside.

Place bacon and onions in saute pan and cook until bacon is crisp and onions are translucent. Add bacon, onions and bacon drippings to bowl holding potatoes. Add 1 c cheddar cheese, sour cream, milk, and butter and mix gently until well blended. You want the potatoes to be lumpy. Scoop mixture back into potato shells, sprinkle with remaining cheese and bake in 350 degree oven until cheese is melted and potatoes are hot throughout. Sprinkle with scallions before serving.