This gourmet steak sandwich is a delicious and satisfying meal that combines tender, juicy steak with flavorful toppings. The steak is seasoned with a blend of spices and cooked to perfection, then sliced and piled high on a toasted bun. Topped with caramelized onions, melted cheese, and a tangy aioli sauce, this sandwich is a true crowd-pleaser. Serve it with a side of crispy fries or a fresh salad for a complete and satisfying meal.