Boil em. Mash em with butter, half and half or milk, and lots of brown sugar. Depending on how many youre making your decide how much of each you need. Just taste test. And u could even top it with marshmallows or pecans and stick it in the over at 350 for 10 or 15mins. its deliciousIf you are talking about sweet potatoes or yams, use a little butter and some heavy cream. Maybe add a little cinnamon, but nothing more.