How to Make It
Whisk together lime juice and mustard. Gradually whisk in oil.
Place apples, walnuts, and green onions in a bowl. Pour dressing over apple mixture; toss to coat. Cover and chill 2 hours.
Sprinkle sugar over cranberries, and toss to coat. Add to apple mixture, and toss. Line a serving platter with lettuce; top with salad.