Green bean salad is a refreshing and healthy dish that is perfect for summer. The green beans are blanched until they are tender, then tossed with cherry tomatoes, red onion, and a simple vinaigrette made with olive oil, red wine vinegar, and Dijon mustard. The salad is then topped with crumbled feta cheese and fresh herbs. It is a light and flavorful dish that is perfect for a picnic or barbecue.