After some thought I had my idea...
Then I made a caramel by heating a drop of water with sugar in a saucepan and boiling until a golden caramel had formed, to this I added a knob of butter.
The caramel was poured all over the mango in the tin.
And finally I poured a basic sponge mix over the top this was made with equal weights of eggs, self raising flour, butter and sugar to which I added a teaspoon of baking powder and some orange oil for flavour (you could use orange or lemon zest).
Baked at gas 4/5 for around 45 mins and it was done.
The taste was delicious, adding the caramel was a nice touch as it kept it moist, the mango also held it shape perfectly, if I get any more mangoes I'll make this one again.
In the meantime I need to find a use for Jerusalem Artichokes, any ideas please leave a comment...