The name for rice paper that has sesame seeds in it is bánh tráng me. Check this out!
So I tried it!
Dish #27: Sesame rice crackers
As shown in the above video, they can be heated in the oven until they are puffed, though it seems most people puff them up by cooking them in the microwave for 2 minutes According to one page I found, they would have gone perfectly with the nước mắm pha I made, but I ate them plain this time.
Items partly used: one