In a medium sized bowl, add cut steak and seasoning. Let sit for 30 minutes to marinate.
While steak is marinating, prepare toppings but dicing onions, cilantro and limes. Set aside.
Add steak to a cast iron or non stick skillet over medium-high heat, let sit in a single layer to sear for 1-2 minutes. Mix then let cook again for another 2-3 minutes for a total cooking time of 3-5 minutes total. Set aside.
Heat up tortillas in the microwave, wrapped in a damp paper towel or clean kitchen towel for a few seconds or until warmed.
Once everything is ready, assemble tacos by adding in steak and topping with onion, cilantro and a squeeze of lime.