TIP: Try to marinate the steak at least 2 hours before cooking. You can also marinate it overnight like I did - but don't go over 12 hours or it will make the outside too soft and mushy.
Pat down the steak with paper towels and transfer to a gallon storage bag or airtight container.
1.5 pounds flank steak
Whisk together orange juice, lime juice, minced garlic, chopped cilantro, ground cumin, chili powder, paprika, chipotle powder, salt, and pepper in a bowl.
1/4 cup orange juice, 1/8 cup lime juice, 4 cloves garlic, 1/2 cup cilantro, 1 teaspoon ground cumin, 1 teaspoon chili powder, 1 teaspoon smoked paprika, 1/8 teaspoon chipotle powder, salt and pepper to taste
Pour the marinade into the gallon bag with the steak. Massage the ingredients into the steak and place them in the refrigerator. Give it a few massages before bed. If you are going to marinate it for only 2 hours, massage it every half hour.
If you're going to use bell peppers, cook them now. I sauté them on medium-high heat in a stainless steel pan, and stir them often so they don't burn.
bell peppers
Place one of the oven racks to the highest point and turn the broiler to high. Let it preheat for at least 5 minutes. Also, line a broiler pan with aluminum foil for easy clean up.
Remove the flank steak from the bag and pat it dry with a paper towel. Throw out the marinade. Place the steak in the foil-lined pan and place in the oven right under the broiler. Broil for 4 minutes.Flip and cook for another 2 minutes. But, know that you may need to cook it longer. Go by the internal temperature - medium rare should be 130 F, and medium should be 140 F. Take the steak out of the oven, tent some aluminum foil, place it over the pan of steak and crimp the edges. The tent should be about one inch above the meat. Let it rest for at least 10 minutes before taking a sharp knife and thinly slicing the meat against the grain.
Heat as many tortillas as you like either on the stovetop or in a toaster oven - 30 seconds per side.
12 corn tortillas
Build your tacos - add whatever garnish you like.
lime wedges, 1/2 cup pico de gallo, sour cream, chopped cilantro, guacamole