Scrummy Mango Pudding!
This is an easy pud, and although it's not pure fruit, it doesn't contain additives like whip-and-serve puddings. You can make this the night before and it will be ready for when you need it the next day.
First get two fresh magoes, remove the peel and the stone. I put them in a food processer to make a puree, but if you peel them with a potato peeler into thin slices and then use a masher, that will work too. Then heat a packet of lemon or lime jelly in boiling water, and leave it on the side when it has all dissolved. Add a small can of condensed milk to the mango, and stir. Then add the mango mixture to the jelly and leave in the fridge. It isn't all fruit, but it is much better than the other stuff!