Preheat oven to 400 degrees and place bread cubes on cookie sheet.Season bread cubes with seasoned salt and sprinkle with olive oilToast bread toast in 400 degree oven until light brown and toasted on all sides.Remove toasted bread cubes from oven and set asidePlace cut tomatoes, cucumbers, basil , onion in large mixing bowl.in another small bowl, make dressing: Combine olive oil, vinegar and salt pepper and mix well.Pour dressing over tomato cucumber mixture. and mix well.Right before serving salad, add toasted croutons. Mix salad gently and serve immediately.Buon Appetito!