Prepare a steamer. Spray 1 thin layer of oil on your choice of baking mold.
When the steamer is ready. Ladle about ¼ c of coconut mixture into the mold, put in a steamer and steam for 5 minutes.
After that, ladle ¼ c of taro mixture on top of now cooked coconut layer and steam for another 5 minutes. You can do this step directly on the mold when it's still in the steamer or take the mold out and return it back to steamer when finish adding extra layer.
Repeat these steps until the rest of both mixtures are used up, then steam a whole cake for extra 20 minutes.
Let the cake cool completely (2 hours) before un-mold and cut into pieces. Serve best at room temperature. Enjoy!