Food & Cooking Recipes Salad Recipes Sweet Onion Salad By Martha Stewart Editors Martha Stewart Editors Facebook Instagram Twitter Website An article attributed to "Martha Stewart Editors" indicates when several writers and editors have contributed to an article over the years. These collaborations allow us to provide you with the most accurate, up-to-date, and comprehensive information available.The Martha Stewart team aims to teach and inspire readers daily with tested-until-perfected recipes, creative DIY projects, and elevated home and entertaining ideas. They are experts in their fields who research, create, and test the best ways to help readers design the life they want. The joy is in the doing. Editorial Guidelines Updated on May 16, 2017 Print Share Share Tweet Pin Email Photo: Ellie Miller Servings: 6 Paper-thin slices of Vidalia and red onions figure prominently in this contemporary take on a traditional steak house salad. Ingredients 1 small Vidalia onion, very thinly sliced with a sharp knife or a mandoline (about 1 ½ cup) 1 small red onion, very thinly sliced with a sharp knife or a mandoline (about 1 ½ cups) 3 tablespoon sherry vinegar 1 tablespoon honey 1 teaspoon fresh lemon juice 1 teaspoon Dijon mustard ¼ teaspoon coarse salt ⅛ teaspoon freshly ground pepper 2 tablespoon extra-virgin olive oil, plus 1 ½ teaspoons 1 medium head radicchio (about 8 ounces), cored, leaves separated and cut into ½-inch pieces (about 2 ½ cups) 2 large leaves red-leaf lettuce, torn into small pieces (about 2 cups) 1 cup red and yellow grape tomatoes (about 5 ounces), halved if large 1 tablespoon finely chopped fresh flat-leaf parsley Directions Put onions into a large bowl of cold water. Swish onions with your hands until water becomes cloudy. Transfer onions to a clean bowl of cold water, and let soak 15 minutes. Repeat twice. Drain, and pat dry. Transfer to a large bowl. Whisk together vinegar, honey, lemon juice, mustard, salt, and pepper in a bowl. Add oil in a slow, steady stream, whisking until emulsified. Add radicchio, lettuce, tomatoes, and parsley to bowl with onions. Drizzle with dressing to taste, and toss. Serve with remaining dressing on the side. Cook's Notes The two onions are mild enough to eat raw, but they become even more tame after soaking them in ice water, a process that helps remove bitter compounds. Print