Recipes Ingredients Meat & Poultry Beef Recipes Patty Melt with Pickled Onion Salad 3.1 (15) 1 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: 4 A diner favorite, plus an easy red-onion salad, makes for an easy and economical dinner. Ingredients ½ red onion, thinly sliced 3 tablespoons red-wine vinegar Coarse salt and ground pepper 1 pound ground beef chuck (85% lean) 1 tablespoon ketchup ½ red onion, grated 3 tablespoons extra-virgin olive oil 1 tablespoon mayonnaise 8 slices sandwich bread 1 cup grated cheddar 1 head iceberg lettuce, chopped ½ teaspoon dried oregano Directions In a large bowl, combine red onion slices with vinegar. Season with salt and pepper and toss to coat; set aside. In a medium bowl, combine ground beef, ketchup, and grated red onion. Season with salt and pepper and mix well. Form mixture into four 1/2-inch-thick patties. In a large skillet, heat 1 tablespoon extra-virgin olive oil over medium-high. Add patties and cook until browned on both sides, about 5 minutes total, flipping halfway through. Remove skillet from heat and transfer patties to a plate. Wipe skillet clean. Divide mayonnaise among sandwich bread slices. Set 4 slices, mayonnaise side down, on a work surface and top each with a beef patty and 1/4 cup grated cheddar. Top with remaining slices, mayonnaise side up. Heat skillet over medium and cook sandwiches in two batches until golden brown on both sides and cheese melts, 5 minutes per batch, flipping halfway through. To bowl with onion, add lettuce, oregano, and remaining 2 tablespoons oil. Season with salt and pepper and toss to coat. Serve salad alongside patty melts. Rate it Print