Food & Cooking Recipes Appetizers Finger Food Recipes Grilled Onions, Shallots, and Leeks 3.0 (2) Add your rating & review By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on May 16, 2017 Print Rate It Share Share Tweet Pin Email Servings: 8 Threading small pieces of vegetables, such as onion wedges on skewers, keeps them from falling through the grates. If using wooden skewers, soak them in water for 30 minutes so they don't burn on the grill. Ingredients 6 to 8 assorted onions and shallots, halved or quartered, leaving onion wedges intact 4 leeks, trimmed, leaving root ends intact, halved lengthwise, and rinsed well Extra-virgin olive oil, for drizzling Coarse salt and freshly ground pepper 1 tablespoon sherry vinegar, or red-wine vinegar Directions Preheat grill to medium. Thread onions and shallots onto skewers. Lightly drizzle onions, shallots, and leeks with oil, and season with salt and pepper. Grill, turning often, until lightly charred and tender, about 25 minutes for the leeks and 45 minutes for the onions and shallots. Drizzle vegetables with vinegar while warm. Rate it Print