Well I had no response from my ice cream/pudding thread so I decided to conduct my own experiment
Vanilla cereal shake
add a small amount of water (or milk)
Mix with fork to a doughy consistency
Divide into 7 small dollops and place on greaseproof paper
Put into a preheated oven,top shelf on gas mark 8 for 5minutes or until slightly browned
Then move to the middle shelf and reduce oven to gas mark 3 for 10 minutes.
Very sweet, quite a doughy texture but is very nice with the tiny crunchy bits.
Would image this would work pretty well with the chocolate cereal shake packet too,also I think it may be worth a try mixing the oatmeal into the mix as well, obviously divide into more dollops and that's 2nights worth of treats