Method

1. Add 1 tsp garlic, 1 Tbsp oil, cumin, chili powder, Worcestershire sauce, cilantro and lime juice into a freezer bag with the flank steak. Marinate in the refrigerator for 4-12 hours.
2. Remove the flank steak from the bag and salt and pepper on both sides.
3. Place marinated flank steak on medium heat grill or a skillet; sear each side until the internal temperature reaches 145˚F or (63˚C). Allow the beef to rest on a cutting board once cooked.
4. Add the sweet peppers, onion and remaining ½ tsp garlic along with salt and pepper to the skillet with beef drippings if not barbecuing and sauté the vegetable until caramelized and softened.
5. Thinly slice the flank steak against the grain, add to a warmed flour tortilla with sautéed vegetables.