Preheat your grill to medium-high heat. Season the flank steak with salt and black pepper on both sides. Drizzle 1 tablespoon of olive oil over the steak, coating it evenly.
Grill the flank steak for about 5-7 minutes on each side for medium-rare, or until it reaches your desired doneness. Remove from the grill and let it rest for 5 minutes before slicing it thinly against the grain.
While the steak is resting, grill the corn. If using fresh corn, grill the ears for about 10-12 minutes, turning occasionally, until charred. If using frozen corn, sauté it in a skillet with 1 tablespoon of olive oil over medium heat until heated through and slightly charred.
In a small bowl, whisk together the balsamic vinegar, honey, and Dijon mustard. Set aside.
In a large bowl, combine the mixed salad greens, cherry tomatoes, grilled corn, and sliced steak. Drizzle the balsamic dressing over the salad and toss gently to combine.
Top the salad with crumbled Gorgonzola cheese and serve immediately.