🌮In a medium bowl, combine olive oil, lime juice, minced garlic, cumin, chili powder, salt, and black pepper to create the marinade.
Place flank steak in a shallow dish or resealable plastic bag and pour the marinade over it. Make sure the steak is well-coated. Marinate for at least 30 minutes or up to 2 hours in the refrigerator.
Preheat a grill or grill pan over medium-high heat. Remove the steak from the marinade and let any excess drip off.
Grill the steak for about 5-7 minutes on each side, or until it reaches your desired level of doneness. Transfer to a cutting board and let it rest for 5 minutes.
Meanwhile, warm the corn tortillas on the grill for about 30 seconds on each side until soft and pliable.
Slice the grilled steak into thin strips against the grain.
To assemble the tacos, place a few slices of steak on each tortilla. Top with diced tomatoes, lettuce, red onion, cilantro, and avocado slices.
Serve the tacos with lime wedges on the side for squeezing over the top. Enjoy!
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