Once you have your potatoes scooped out into a separate bowl, add your butter and sour cream to the mixing bowl. Using a potato masher, mash the potatoes, butter and sour cream together until creamy. Then, stir in half of the cheese.
Spoon the filling into the scooped out potatoes and top the potatoes with the remaining cheese. If you are using bacon, then also top with your cooked bacon crumbles.