- In a bowl, combine the tomatoes, cucumber, onion and basil. Drizzle with the 1/2 cup olive oil and the 3 tablespoons vinegar, season with salt and pepper and toss well.
- Place half of the bread in a wide, shallow bowl. Spoon half of the tomato mixture over the bread. Layer the remaining bread on top and then the remaining tomato mixture. Cover and refrigerate for 1 hour.
- Just before serving, toss the salad and adjust the seasonings with salt and pepper. If the bread seems dry, add a little oil or vinegar. Serve immediately. Serves 4 to 6.