Mix coriander, cumin, garlic powder, cayenne, salt, and half the oil. Use half of marinade to cover steak pieces. Toss the other half with the chopped peppers and onions
Heat a cast iron skillet over medium-high heat. Add 1 tbs. (15 ml) oil. To heated oil, add as many steak pieces as can fit into the pan. Sear for 2 minutes on each side. Set seared pieces aside onto a baking sheet. When all the steak is seared, add tomatoes to pan, and bake in oven for an addition 6 to 12 minutes, depending on how you like our steak
Wipe skillet clean and return to medium-high heat. Add remaining tbs. (15 ml) of oil and then minced garlic to heated oil. Add sliced peppers and onions with a dash of salt. Sauté until softened, ~5 minutes. Add a squeeze of lime and season to taste with salt or the spices
Warm tortillas according to package instructions
After steak is done, let rest for 5 minutes and slice against the grain (perpendicular to the natural lines in the steak). Serve fajitas with your tasty fillings, warmed tortillas, sliced limes, sour cream, and cilantro
Head start: Season & tenderize your chicken for tomorrow