From EatingWell.com. Ready in 35 minutes; serves about 4 people
1 tablespoon extra-virgin olive oil
1-1 1/2 pounds kale, ribs removed, coarsely chopped
2/3 cup water
2 Granny Smith apples, sliced
2 tablespoons cider vinegar
4 teaspoons whole-grain mustard
2 teaspoons brown sugar
Pinch of salt
1. Heat oil in a Dutch oven over medium heat. Add kale and cook, tossing with two large spoons, until bright green, about 1 minute. Add water, cover and cook, stirring occasionally, for 3 minutes. Stir in apples; cover and cook, stirring occasionally, until the kale is tender, 8 to 10 minutes more.
2. Meanwhile, whisk vinegar, mustard, brown sugar and salt in a small bowl. Add the mixture to the kale, increase heat to high and boil, uncovered, until most of the liquid evaporates, 3 to 4 minutes.