This casserole is simple and delicious, and makes a perfect snack during a picnic (bento anyone?)—you should use it as a basic idea for a casserole, since the pasta sauce is the stable and the most important piece of the meal. It's also a very tweak-able recipe! :-)
I didn't plan to make this cake at all, what I did plan was apple tart with apricot jelly... Well, sometimes I just change my mind, especially while experimenting in the kitchen :-) The result is interesting, refreshing and citrusy! :-) If you don't like the strong orange aroma, you can replace them with any soft and sweet fruit: peaches, pears, and apricots should do fine!