sharp cheddar cheese
Put a big potato in the microwave for eight minutes. (If you're cooking two or more potatoes, you have to do it for even longer. At this point you might as well break down and use the oven.) Cut a slice in it, make sure it's mushy inside, and then put in the cheese. Cook it for another minute or until the cheese is completely melted. Then-- here's the genius bit-- put some chopped up walnuts in it. It gives it a crunchiness and a more interesting flavor. Then put the butter and sour cream on. And salt, of course. This is basically supposed to keep you from tasting much potato.