This sounds like such a good idea that I decided to see what I could find. There is a page of recipes on Google under "mini Christmas puddings", and I particularly liked this one: Mini Christmas Puddings « The Fuzzy Times
Your steaming time seems really short though. I have had various versions of this stuff since I was a kid, and the steaming has always taken about eight hours, regardless of the size of the pud. Hope this helps.
Cheers