Making Beef Fajitas is simple and rewarding. Follow these steps for a mouthwatering result:

1. Prepare the Marinade: In a bowl, mix olive oil, lime juice, soy sauce, chili powder, cumin, garlic powder, onion powder, salt, and pepper.
2. Marinate the Beef: Place the flank steak in a resealable plastic bag or shallow dish and pour the marinade over it. Seal or cover, then let it marinate in the refrigerator for at least 30 minutes (or up to 4 hours for enhanced flavor).
3. Heat the Grill or Skillet: Preheat your grill or skillet over medium-high heat.
4. Cook the Beef: Remove the steak from the marinade. Grill or sear the steak for about 6-7 minutes on each side for medium-rare. Adjust the time for your desired doneness.
5. Let It Rest: Once cooked, remove the steak and let it rest for 5-10 minutes. This helps retain juices in the meat.
6. Sauté the Vegetables: In the same cooking area, add the sliced onions and bell peppers. Sauté for about 5-7 minutes until they are tender and slightly charred.
7. Slice the Beef: Thinly slice the rested steak against the grain.
8. Warm the Tortillas: In a dry skillet or microwave, warm the tortillas until pliable.
9. Assemble: Place the sliced beef, sautéed veggies, and fresh cilantro inside each tortilla. Squeeze lime juice over the toppings if desired.
10. Serve Immediately: Enjoy your Beef Fajitas while they are hot, allowing everyone to create their own flavorful wraps.

With these clear instructions, crafting your own Beef Fajitas will be a delightful and successful culinary experience!