Prepare the marinade: In a small bowl, whisk together the olive oil, lime juice, garlic, cumin, chili powder, paprika, smoked paprika, onion powder, salt, black pepper, red pepper flakes, and oregano. Stir until well combined.

Marinate the steak: Place the flank steak in a resealable plastic bag or shallow dish. Pour the marinade over the steak, making sure it’s evenly coated. Seal the bag or cover the dish and refrigerate for at least 1 hour, or up to 4 hours for maximum flavor.

Preheat the grill or skillet: Preheat a grill or a cast-iron skillet over medium-high heat. If using a grill, oil the grates lightly. If using a skillet, add a tablespoon of olive oil to the pan.

Cook the steak: Remove the steak from the marinade, allowing any excess marinade to drip off. Place the steak on the hot grill or skillet and cook for 4-5 minutes per side for medium-rare, or longer depending on your preferred level of doneness (for medium, cook for about 6 minutes per side).

Rest the steak: Remove the steak from the grill or skillet and let it rest for 5 minutes before slicing. This helps the juices redistribute and ensures a tender steak.

Slice and serve: After the steak has rested, slice it against the grain into thin strips. Garnish with fresh chopped cilantro, if desired.

Serve: Serve the steak in burritos, tacos, bowls, or on top of a salad with your favorite toppings, such as rice, beans, guacamole, salsa, sour cream, and cheese. Enjoy your homemade Chipotle-inspired steak!