Food & Cooking Recipes Appetizers World's Greatest Onion Dip 3.7 (166) 12 Reviews 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 July 27, 2011 Print Share Share Tweet Pin Email Yield: 2 cups Fans of Kors d'Oeuvres founder Korey Provencher have deemed this creamy onion dip the "world's greatest"; put it to the test at your next dinner party. Also Try:Spinach and Artichoke Dip Ingredients 2 tablespoons olive oil 4 small onions, chopped ½ shallot, finely chopped 2 sprigs fresh thyme 2 tablespoons balsamic vinegar 2 tablespoons Worcestershire sauce ½ teaspoon coarse salt ¼ teaspoon freshly ground pepper 1 (8-ounce) package cream cheese, softened ½ cup sour cream 2 tablespoons mayonnaise Pinch of celery salt Assorted crudite, for serving (optional) Flatbreads or toasted baguette slices, for serving (optional) Directions Heat oil in heavy-bottom pan or Dutch oven heat oil over medium heat. Add onions, shallot, and thyme. Let cook until onions are very soft and caramel in color, 45 to 60 minutes. Add vinegar and Worcestershire sauce; let cook until slightly thickened, about 15 minutes. Season with salt and pepper; remove from heat and let cool to room temperature. Meanwhile, in the bowl of an electric mixer fitted with the whisk attachment, whisk together cream cheese, sour cream, and mayonnaise until fluffy, about 5 minutes. Add cooled onions and celery salt; stir to combine. Transfer to refrigerator to chill at least 2 hours and up to 2 weeks; serve with crudite, flatbreads, or baguette slices. Print