Bake a small potato and let it cool. While it is cooling slice a tomato. When the potato is cool cut it into thickish slices and fry them in a little olive oil in a pan. Let the potato get nice and crisp and then lay them flat in the pan. Season the potatoes. Lay the slices of tomato on top of the potato slices and turn the pan to medium heat, cover the pan so that they cook in the heat. Best to use a transparent cover for this. Like the ones the use on the slow cookers.
Then break an egg in the middle of the tomato and cover again until the egg is cooked. Season with salt and pepper and maybe a little Worcestershire sauce and gobble up. Great.