Panzanella is a refreshing Tuscan salad made with stale bread, tomatoes, cucumbers, onions, and basil. The bread is soaked in water or vinegar to soften it, then tossed with the vegetables and dressed with olive oil and vinegar. Panzanella is a great way to use up leftover bread and is perfect for summer when tomatoes are at their peak. It is a light and flavorful salad that is both satisfying and healthy.