Recipes Ingredients Meat & Poultry Beef Recipes Seared Flat-Iron Steaks with Wine Sauce 2.8 (53) 2 Reviews 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 June 12, 2017 Print Rate It Share Share Tweet Pin Email Prep Time: 20 mins Total Time: 20 mins Servings: 4 Because flat-iron steaks are well marbled, there's no need to add oil to the skillet. When cooked up to medium, they remain tender and juicy. Our stir-together mustard sauce is another delicious accompaniment. Ingredients 4 small flat-iron steaks (each about 6 ounces and 1 inch thick) Coarse salt and ground pepper 1 cup dry red wine, such as Merlot or Cabernet Sauvignon 2 tablespoons cold butter, cut into pieces Directions Heat a large cast-iron or other heavy-bottomed skillet over medium-high until very hot. Season steaks with salt and pepper. Add to skillet; sear 4 to 8 minutes per side for medium-rare (if browning too quickly, reduce heat after turning steaks). Transfer steaks to a plate, and cover loosely with aluminum foil (reserve skillet). Add wine to skillet; simmer over medium-high, stirring occasionally and scraping up browned bits with a wooden spoon, until syrupy, 4 to 6 minutes. Remove skillet from heat. Stirring constantly, drop butter into sauce, one piece at a time, waiting for each piece to blend in before adding the next. Season with salt and pepper. Serve steaks drizzled with sauce. Rate it Print