When we next have the oven on, can I pre-bake these, and refreeze them? so that they are ready for their toppings and can be bunged in the oven eithout having to prebake each one induvidually?
Or is it not safe to; thaw them, cook them, freeze them and cook them again?
when you cook something that is frozen you can freeze it again. Every time you cook something it is a new starting point because the cooking has killed all the bugs in it. There will still be spores that can withstand cooking and will start to develop unless frozen or cooked again. Before fridges and freezers were available it was common to cook things like stews every couple of days to kill off the bugs. I don't know how many times this can be done but there certainly some ABers who probably do this all the time.
It ended up having a really tough outside to it, i weren't sure if I should use foil though when i prebaked it, and ended up putting some over it half way through, should I put foil over them at the start, next time.