Prick Potatoes with fork to allow steam to escape during baking. Bake in oven until tender, about 1 hour. Remove from oven and cool slightly until cool enough to handle. Cut each potato in half lengthwise and scoop out insides, leaving a 3/8 inch shell. Spread inside of shells with butter, sprinkle with salt. Cut each shell into 6 pieces and lay on lightly greased baking pan; sprinkle with cheese and bacon.
Set oven temperature to broil or 550° F. Broil potato pieces about 5 inches from heat until cheese is melted, about 2-3 minutes.