Preheat grill to medium-high heat, approximately 400°F (204°C).
Season the steak and corn ears with olive oil, salt, and pepper.
Grill the steak for 4-5 minutes per side until an internal temperature of 135°F (57°C) is reached for medium-rare.
Grill the corn for 8-10 minutes, rotating frequently until kernels are charred and tender.
Remove steak from grill and let rest for 10 minutes before slicing thinly against the grain.
Cut corn kernels off the cob using a sharp knife and set aside.
In a small bowl, whisk together balsamic vinegar, honey, Dijon mustard, and the remaining olive oil to create an emulsion.
In a large bowl, toss the mixed greens, tomatoes, and onions with half of the prepared vinaigrette.
Divide the greens into four serving bowls and top each with sliced steak, grilled corn kernels, and gorgonzola crumbles.
Drizzle the remaining vinaigrette over the top of each salad and serve immediately.