Ingredients

serves 4

　　1 tablespoon olive oil

　　1 sweet onion, such as Vidalia, halved lengthwise and thinly sliced

　　1 1/2 pounds mustard greens (2 bunches), stems removed, leaves sliced crosswise into 1-inch-thick pieces

　　Coarse salt and freshly ground pepper

　　2 teaspoons apple-cider vinegar

　　

Step 1

In a large skillet, heat oil over medium-high. Add onion; cook, stirring frequently, until onion is tender and golden, 6 to 8 minutes.

　　

Step 2

Add as many greens to skillet as will fit; season with salt and pepper. Cook until wilted, tossing and adding more greens as they wilt, 2 to 3 minutes total. Stir in vinegar; season with salt and pepper, and serve.

　　Everyday Food: Fresh Flavor Fast by Martha Stewart Living Magazine. Copyright © 2010 by Martha Stewart Living Magazine. Published by the Crown Publishing Group. All Rights Reserved.Martha Stewart Living magazine was first published in 1990. Over the years, more than two dozen books have been published by the magazine’s editors.Martha Stewart is the author of dozens of best-selling books on cooking, entertaining, gardening, weddings, and decorating. She is the host of The Martha Stewart Show, the successful daily syndicated television show.