In a bowl, mix soy sauce, honey, gochujang, sesame oil, and minced garlic to create the marinade.
Add the sliced rice cakes to the marinade, ensuring they are well coated. Let them marinate for at least 30 minutes.
Preheat a grill or grill pan over medium heat.
Thread the marinated rice cakes onto skewers, alternating with pieces of green onion.
Grill the skewers for about 3-4 minutes on each side, or until they are slightly charred and heated through.
Sprinkle sesame seeds over the skewers before serving.