Scrub potato well; prick with a fork. Bake in a 425 degree F oven about 40 minutes or until tender.
Cool slightly. Cut lengthwise into quarters. Remove cooked potato insides, leaving 3/8-inch shells. (Reserve cooked potato for soup, potato salad, or another use.) Place shells, cut side up, in a baking pan. Brush with margarine or butter; sprinkle with salt and pepper.
Broil 4 inches from the heat for 1 to 2 minutes or until crisp. Brush with steak sauce or salsa. Spoon sour cream on each shell and sprinkle with bacon, green onion, and green pepper. Top with shredded cheese. Return to broiler and broil about 1 minute or until cheese melts. Makes 1 serving.