@Dutchy,
There is a bakery, on South Road, Morphett Vale, across from Cheap as Chips and next to the fruit and veg shop that sell just the base, thick as well as ones with "some toppings" but we like to make our own.. You should go and pick one up they aren't expensive and then add all you desire and chuck it in the oven

There, I've organised your dinner for the night hahahahaha