Place unsweetened dried grated coconut in a fry pan and stir over low heat for 2 minutes or until lightly toasted. Do the same with sesame seeds.
Mix the two in a shallow bowl. Set aside.
Prepare a steamer and allow water to come to a boil.
Place nian gao cubes on plate lined with banana leaf. Wrap with aluminum foil. Place in the steamer, cover with lid, and steam over medium heat for 10 minutes.
Remove steamed nian gao from steamer. Using a pair of chopsticks or a fork, pick up a piece of sticky nian gao and roll it in toasted coconut and sesame seeds mixture. Repeat with remaining nian gao.