These steak fajitas are simple, flavorful, and the steak gets so tender from a fresh orange juice marinade. Add some charred peppers + onions, warm tortillas, and your favorite toppings and dinner is done.
Slice the flank steak against the grain. Add steak, orange juice, olive oil, salt, pepper, cumin, chili powder and Italian seasoning to a bowl or bag. Mix well. Marinate for at least 4 hours, ideally overnight for maximum flavor. Heat a large skillet over high heat with a drizzle of olive oil. Add the onions and peppers and season with salt, pepper, cumin and chili powder. Sauté until tender and slightly charred, then remove from the pan. Add the marinated steak to the hot skillet and sear on all sides until cooked to your liking. Add the peppers and onions back to the pan and toss everything together. Serve in warm tortillas with your favorite toppings.