Marinate the Carne Asada:

• In a bowl, mix together the olive oil, garlic, lime juice, cumin, chili powder, smoked paprika, salt, pepper, and oregano.
• Rub the marinade onto both sides of the flank steak or skirt steak, then cover and refrigerate for at least 30 minutes, or up to 2 hours for maximum flavor.

Grill the Carne Asada:

• Preheat a grill or grill pan to medium-high heat. Once hot, place the marinated steak on the grill and cook for about 4-5 minutes per side for medium-rare, or longer for desired doneness.
• Once cooked, remove the steak from the grill and allow it to rest for about 5 minutes before slicing it against the grain into thin strips.

Warm the Tortillas:

• While the steak rests, warm the tortillas in a dry skillet over medium heat for about 30 seconds on each side, until soft and slightly charred.

Assemble the Tacos:

• Layer each tortilla with a generous amount of shredded cheese. Place the sliced carne asada on top of the cheese to allow it to melt.
• Add sliced red onions, fresh cilantro, and avocado slices. Optionally, top with salsa for extra flavor.

Serve:

• Serve the tacos with lime wedges on the side for an extra zesty touch. Enjoy your cheesy, flavorful carne asada tacos!