Recipes Ingredients Meat & Poultry Beef Recipes Chile-Spiced Steak and Grilled Onion Tacos 4.5 (4) 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 Photo: Petrina Tinslay Prep Time: 20 mins Total Time: 1 hrs 20 mins Yield: 12 tacos Pairing marinated grilled steak with onions makes for flavorful and vibrant tacos, but it's our Easy Tomatillo Salsa that takes this dish into truly delicious territory. Ingredients 1 tablespoon vegetable oil, plus more for grill 2 tablespoons chile powder, such as ancho, pasilla, or chipotle 2 tablespoons light-brown sugar 2 tablespoons soy sauce 2 tablespoons fresh lime juice, plus wedges for serving 1 ½ pounds flank steak Coarse salt and ground pepper 1 large red onion, cut into ¼-inch rounds 12 corn tortillas, warmed or lightly toasted Easy Tomatillo Salsa, for serving Directions In a small bowl, whisk together oil, chile powder, brown sugar, soy sauce, and lime juice. Place steak in a 9-by-13-inch baking dish and cover with marinade. Turn once to coat steak, then cover dish tightly in plastic wrap and refrigerate 1 hour. Heat a grill or grill pan to medium-high. Clean and lightly oil hot grill. Remove steak from marinade, letting excess drip off; reserve marinade. Season steak with salt and pepper. Grill onion and steak, flipping occasionally, until onion is lightly charred and steak is medium-rare, about 10 minutes. Brush onion and steak with reserved marinade and cook 1 minute more, flipping once. Place onion on a serving plate. Transfer steak to a cutting board, loosely tent with foil, and let rest 10 minutes before thinly slicing against the grain. Serve steak and onion with tortillas, salsa, and lime wedges. Cook's Notes In a heavy skillet, toast tortillas over medium until browned in spots. Or, wrap a stack of them in parchment-lined foil and warm in a 400-degree oven for 5 minutes. Rate it Print