1) In a large bowl, combine the ground beef, salt, and pepper; mix thoroughly.
2) Shape the beef mixture into 4 hamburgers.
3) In a skillet, saute the hamburgers along with mushrooms, onion, oregano, and garlic in butter, until browned.
4) Stir in the tomato soup and water, cover and cook over a low heat for 15 minutes; stirring occasionally.
5) Serve the Hamburgers Italiano immediately on a serving platter.