Steps
1. In a large bowl, combine the stale bread cubes, chopped tomato, diced cucumber, and sliced red onion.
2. Drizzle the olive oil and balsamic vinegar over the salad and season with salt and pepper.
3. Toss gently to combine, ensuring the bread absorbs some of the dressing.
4. Let the salad sit for about 10 minutes to allow the flavors to meld.
5. Just before serving, fold in the fresh basil leaves and adjust seasoning if necessary.