Beat the eggs, grate half of the cheese and knead them together in a bowl. Chop the ham and tomatoes finely. Remove the insides of the tomatoes - leave only the outsides.
Add the ham and finely chopped tomatoes to the eggs and cheese. Mix. On each slice spread some of the mixture, finally sprinkle with the rest of the cheese and put them to bake until browned.
Finally, season with salt and pepper.