Tangy buttermilk dressing and toasted walnuts complement chickpeas, lettuce, radish, and green beans in this refreshing salad.
Boil green beans 1 minute; drain, and cut into 1-inch pieces. In a small bowl, mix buttermilk, sour cream, vinegar, garlic, 1/2 teaspoon salt, and 1/4 teaspoon pepper. In a large bowl, combine beans, chickpeas, radishes, and nuts; toss with half the dressing. Serve on lettuce, drizzled with remaining dressing.