Hi,
When I was at school in the 80s we used to have a pud with a shortcrust pastry base and a lovely light chocolate filling. A bit like a tart au chocolat but the filling was much lighter and moussier.
I would love the recipe for this very specific thing. Can anyone help please?

i am not sure but i believe this might be close to it.

Chocolate Cream Pie

http://allrecipes.com/Recipe/Chocolate-Cream-Pie-2/Detail.aspx