Preheat oven to 400°F. Wash and pierce the potatoes. Sprinkle with salt and cook potatoes in oven for about an hour on a cookie sheet and wire rack until soft. Remove from the oven and let cool to the touch.
Slice potatoes lengthwise in half. Scoop out inside of potato with a teaspoon into a medium size mixing bowl. Leave a little potato inside so the potato skin won't fall apart.
Add sour cream, butter, salt, pepper and cayenne to bowl and mix with a potato masher. If you don't have one, a fork works well. Mix half of the grated cheese and half of the bacon along with all of the green onions into the bowl.
Scoop out potato mixture with a table spoon and fill potatoes. Sprinkle with remaining cheese and bacon on top.
Heat oven to 450°F. Bake potatoes for another 10 to 15 minutes.