Flank and skirt steaks are two of my favorite low-cost, big-flavor meats. Turned into fajitas, one steak easily stretches into four servings (and the recipe can be doubled to serve more), especially when smothered with onions and peppers. Fajitas are super adaptable to nearly any situation, too — if you have tortillas in the fridge (quesadillas are a house favorite so we always do), you’re in the clear. If not, serve it as southwestern steak stir-fry alongside some red beans and rice.

Ingredients
21⁄2 tablespoons olive oil
2 limes, juiced
1⁄4 cup finely chopped cilantro
1⁄2 to 2 jalapeño chile peppers, ribbed, seeded, and finely diced (optional)
2 garlic cloves, finely minced or pressed through a garlic press
1 teaspoon ground cumin
1 teaspoon paprika
1 teaspoon dried oregano
1⁄2 teaspoon salt
1⁄2 teaspoon freshly ground black pepper
11⁄4 pounds flank or skirt steak, sliced crosswise into 1⁄4″-thick pieces
2 large green or red bell peppers or 1 cup of roasted pepper strips
1 large white onion
8 flour tortillas
Salsa, for serving

Marinate the meat. Whisk 11⁄2 tablespoons of the olive oil, the lime juice, cilantro, jalapeños (if using), garlic, cumin, paprika, oregano, salt, and black pepper together in a large bowl. Place the meat in the marinade and toss to coat. Set aside while you slice the peppers and onion into 1⁄4″-thick strips.

Sear the steak. Heat a heavy-bottomed skillet (cast iron works great) for 3 minutes over medium-high heat. Remove the steak from the marinade. Drizzle 1⁄2 tablespoon of the olive oil into the pan and then add half of the steak to the skillet. Cook, stirring occasionally, until the steak is nicely seared on all sides, about 2 minutes. Transfer the steak to a large plate and repeat with the remaining steak slices. Use tongs and a wad of paper towels to wipe out the skillet (be careful—it’s hot).

Brown the vegetables. Place the skillet back over the heat and drizzle in the remaining 1⁄2 tablespoon of olive oil in the pan. Add the onion and bell peppers to the pan and cook until charred and softened, about 5 minutes. Heat the tortIllas. While the onion and peppers cook, wrap the stack of tortillas in a kitchen towel or paper towels and place them on a plate. Microwave them until they are soft and supple, 20 to 30 seconds. Transfer the steak and vegetables to a large shallow dish and serve with the warm tortillas and the salsa.