Waldorf Salad with Yogurt

In a large bowl combine the apples and lemon juice. Add the grapes celery and green onions; toss.

In a small bowl whisk together the mayonnaise yogurt apple juice and celery seeds. Spoon over the apple mixture and toss gently.

Wash the watercress and dry thoroughly. Arrange greens on individual salad plates. Mound the apple mixture on top and sprinkle with the walnuts.