1 1/2poundssirloin steak, cut into bite sized pieces
For serving: 6" flour or corn tortillas, onion, cilantro, lime, cotija cheese, sour cream, avocado or guacamole
Steak taco marinade:
Place 3 Tablespoons olive oil, soy sauce, lime juice, brown sugar, garlic, cumin, salt, and pepper in a large bowl or gallon-sized zip-top bag. Stir or shake until combined. Place meat inside the bag and let sit for at least 30 minutes (up to 5 hours). If you have more time, let it sit longer.
Place the remaining 1 Tablespoon olive oil in a large skillet over medium heat. Add the steak and cook until the meat has browned (about 5-6 minutes), or has reach desired doneness. Alternatively you can grill the whole steak until it reaches desired doneness and then slice just before serving.
Serve steak in warm tortillas with desired toppings.
Grilling: You could also cook the steak on the grill over medium-high heat for about 4-5 minutes per side (or until it reaches desired doneness). Then slice into strips after.