There are many things I love about Chocolate Origin Chocolate Lava Cake with vanilla ice cream; the decent quality for $5, nicely sized portion to satisfy your craving and pretty convenient locations but what a lot of other places do not offer, is the mobility. I can have lava cake with ice cream on the go, how awesome is that?
Chocolate Origin
313 Somerset B3 / Blk 4 Changi Village Road
knockonfood. 
I found a nice, healthier tau huay dessert which is low in sugar, you should really check it out! It’s called Happy Boy and they have quite a few outlets. Their website is http://happyboybean.com.sg