Scrub the potatoes and dry completely
Rub well with fat if a soft skin is desired
Bake in a hot (425-degree) oven for about 45 minutes or until they are soft when pressed together with the fingers (use an oven mitt)
Remove from the oven and make 2 gashes in the center of the potatoes in form of a cross
Press the potato with the fingers
Insert a large piece of butter and season with salt and pepper