This green bean salad is a perfect side dish for any meal. The green beans are blanched in the Thermomix until they are tender but still have a bit of crunch. They are then tossed with crumbled feta cheese, chopped walnuts, and a simple vinaigrette made with olive oil, lemon juice, and Dijon mustard. The result is a refreshing and flavorful salad that is sure to impress your guests.