Classic Tex Mex steak fajitas are an easy and adaptable dish to make. Consider topping yours with shredded cheese, chopped cilantro, and a dollop of sour cream. For a low-carb option, enjoy the cooked steak and vegetables over a plate of chopped salad greens: truly spectacular!
Make the seasoning by mixing together cumin, chili powder, onion powder, garlic powder, and salt in a small bowl. Season both sides of the steak with the seasoning. Set aside.
Set a heavy 10-inch skillet over medium-high heat and let it heat up for 1 minute. Add ½ tablespoon of olive oil to the pan and let it heat for 30 seconds. Add the steak, frying on each side for 3 to 4 minutes, or to desired doneness. (Cooking the meat for this length of time will deliver steak that is between medium and medium rare.)
Remove the steak from the skillet and place it on a plate. Cover the steak while you cook the vegetables. * This step is important. If you slice the meat before allowing it to rest, much of the meat juices will run out onto the plate leaving you with a dry, flavorless piece of meat.
Add an additional ½ tablespoon of oil to the skillet. Add the onions and bell peppers and cook, stirring frequently for 5 minutes. Add the garlic and cook for 30 seconds more.
Slice the meat across the grain into thin slices. Return the slices of meat to the skillet and add ½ tablespoon of Worcestershire sauce. Stir constantly until heated through, about 1 minute.
Spoon the meat and vegetables into warm tortillas. Serve plain or top with sour cream, cheese, cilantro, guacamole, or salsa.
Notes
Prep the Veggies Ahead of Time: You can slice the peppers and onions in advance to save time later. It's a great way to make meal prep easier and ensure you always have fresh veggies on hand.2. Let the Steak Warm Up: Before cooking, let the steak sit at room temperature for about 30 minutes. This helps it cook more evenly, ensuring it stays juicy.3. Slice the Steak on an Angle: For tender fajitas, slice the steak at a 45-degree angle—this is called "cutting on the bias." It increases the surface area and breaks down more muscle fibers, resulting in a more tender bite.4. Add Lime for Freshness: A quick squeeze of lime over the fajitas just before serving gives them a bright, zesty flavor that complements the rich steak and vegetables.5. Make Low-Carb Fajitas: If you want to cut back on carbs, skip the tortillas and use large lettuce leaves as wraps. Butter lettuce and romaine lettuce work great for this.