I made this a while ago and i was just checking up all the syn value of it and its not to bad for the whole cake its only 51 syns and it can be divided into as many parts as you want

35grams of plain chocolate i used bournville
2 sachets of sugar free orange jelly crystals
1 flan base from asda

make the jelly up and let it set in the fridge for a few hours

when its ready place it on top of the flan base

melt the chocolate and spread over the top and leave it to set for 30 mins

then divide and tuck in yummmmm
I got 12 portions out of mine so thats 4.25
syns per slice