In a shallow dish, combine salad dressing and seasoning; add the beef and turn to coat. Cover and refrigerate for at least 8 hours or overnight. Drain and discard marinade. Using rubber spatula, remove excess ranch coating from steak., Place 15x10 baking sheet into oven; preheat oven to 375°. In a shallow plate, combine the cornmeal, bread crumbs and garlic powder. Coat both sides of beef in cornmeal mixture., Carefully remove baking sheet from oven; grease. Quickly place steak on baking sheet and return to oven. Bake until bottom is golden brown, 8-10 minutes. Carefully flip steak; bake until a meat reaches desired doneness (for medium-rare, a thermometer should read 135°; medium, 140°; medium-well, 145°), about 8-10 minutes longer.