the lowest point base i have found is 14pts using m&s appricot, raison, and honey cookies mixed with bertolli light. and for the topping 200g tesco light choices fat free fromage fraise 12.5g of sweetner and what ever flavour jelly you want or in your case use vannilla and add 2 sheets of gelitin disssolved in a little water and added to the fromage fraise.
heres the points
10.5 for 200g cookies
3.5 for 50g bertolli light
1 for jelly sachet
1.5 for fromage frais
0pts for the sweetner
1 for added fruit (if any, if i use a strawberry jelly i add some cut up strawberry)