6flour tortillas, (gluten free if you need that), warmed
Instructions
Freeze the beef until it is firm enough to slice easily, about 30 minutes. Cut across the grain and slightly on the bias into 1/4 inch slices.
In a large bowl, combine 1/4 cup lime juice, coriander, oil, garlic, cumin, oregano and black pepper. Add the steak. Cover, refrigerate, and allow to marinate for 2 hours, stirring occasionally.
Coat a grill pan or broiler rack with nonstick spray. With tongs, remove the steak from the marinade (reserve the marinade) and arrange in a single layer on the rack. Broil about 5 inches from the heat for 4 minutes. Turn and broil another 4 minutes, or until lightly browned.
In a large nonstick frying pan over medium-high heat, combine the reserved marinade, the onions and peppers. Cook for 3 to 4 minutes, or until crisp tender.
Add the tomatoes and remaining 1/4 cup lime juice. Cook, stirring occasionally, for 3 minutes, or until just heated. Add the meat and toss to it all to combine.
Divide the mixture among the tortillas. Sprinkle with the chopped avocados. Top with your choice of shredded cheese, lettuce, chopped tomatoes, sour cream and salsa. If you like it spicy, add a few sliced jalapeno peppers.
Fold the tortilla shell over to enclose the filling.