Yes, that's bingka susu. Quite good for a first time baker ;-)
Let me share the story of the origin. One of my best mates from Brunei came to visit recently and decided to pull a prank call (Punk'd style) to a new lady friend whom he recently met. This lady is currently studying here. He pretended to be one of the organisers for an upcoming function. He actually asked her to prepare some of the food for the function and suggested to make local bruneian delicacies such as "bingka susu" or "seri muka". Me and Bung T were there in the same room during the phone call and were having a hard time to control our laughter! Anyway, she replied coolly which goes something like this, "minta maaf ah, seri muka inda ku berapa pandai tu membuat, bingka susu kali saja dapat tu." At that point, we were laughing uncontrollably! It was only some time and after a lot of laughing that my friend came clean.
Since then, we kept on badgering her to actually make bingka susu for us. And now, here it is. Finally after nearly 2 months. We even added "bing" to her name now.
So, it's no surprise that this post is dedicated to s***bing for this wonderful bingka susu. Thanks a lot and teruskan usaha anda dengan resepi-resepi kuih traditional Brunei :-P