These Grilled Onion & Skirt Steak Tacos are a bold and flavorful fusion of smoky grilled steak, sweet charred onions, and fresh toppings wrapped in warm tortillas. A perfect dish for taco night, casual cookouts, or weeknight dinners!
In a resealable bag or large bowl, combine the skirt steak with olive oil, minced garlic, lime juice, salt, black pepper, and cumin. Toss to coat evenly, and let marinate for at least 30 minutes or up to 2 hours.
Preheat the grill to high heat.
Place the onion slices directly on the grill or in a grill basket. Grill for 4-5 minutes per side, or until the onions are tender and slightly charred. Set aside.
Grill the skirt steak for 3-4 minutes per side, or until medium-rare to medium. Let the steak rest for 5-10 minutes before slicing thinly against the grain.
Warm the tortillas on the grill for about 20-30 seconds per side.
Assemble the tacos by filling each tortilla with sliced steak, grilled onions, and your preferred toppings such as cilantro, avocado, salsa, and lime wedges.