the good thing about the sauce is that it cooks to almost solid, so it's a bit like a quiche or something; so is possibly less suspect than a sauce!

The thing with the roast veg is that you can roast anything, so if you don't like the courgette/aubergines, you could do peppers, or corn on the cob (actually I roast that still in it's husk, and the just eat it), or any fairly solid veg that you like.
N.