Make the corn salsa by adding corn, sliced tomatoes, diced jalapeno, lemon, green onion, and fresh basil together until well combined. Refrigerate until ready to assemble salad.
Heat a cast iron skillet or grill over medium high heat. Meanwhile, mix seasoning blend together and sprinkle over both sides of the steak, patting into meat
Add steak to hot cast iron skillet and grill on each side for 5-8 minutes until nicely charred on the outside but juicy on the inside. Let meat rest on a cutting board under foil before slicing, while you prep salad.