Emerald-green lacinato kale is the star of this healthy kale salad, tossed with an easy maple, mustard and apple cider vinaigrette and studded with crisp apples. Toss or massage the kale with the dressing about 30 minutes before you're ready to serve. The sturdy kale leaves won't wilt from the dressing and will taste even better after they've been marinated in it.