Using a paper towel, pat the steak dry on both sides. Season with salt and pepper and then rub the taco seasoning all over the steak. Cover with plastic wrap and refrigerate for at least one hour. Remove from the fridge 30 minutes prior to cooking to bring the steak up to room temperature.
Meanwhile, make the salsa by combining the corn, red onion, green onion, tomato, and salt and pepper in a medium bowl. Last, add the crumbled Castello Danish Blue Cheese and mix to combine.
Grill your steak to your desired doneness and let rest for at least 15 minutes prior to slicing. Top the steak with the Blue Cheese Salsa and enjoy.