If the bread isn’t fully dry, toast it in the oven at 375°F for 10–12 minutes until it is golden and crisp.
In a small bowl, whisk together the olive oil, red wine vinegar, salt, and pepper.
In a large bowl, toss together the pieces of bread, chopped tomatoes, onions, cucumbers, and basil.
Pour the dressing over the salad and toss everything together gently to combine.Allow the salad to sit for 20–30 minutes at room temperature before serving. This gives the bread a chance to soak up the flavors. Enjoy!