The moisture in some pizza toppings can make the pizza watery on top,
so I'm pre-cooking the mushroom slices on a piece of foil in my
toaster oven. Other added toppings are going to be fresh Hatch
chilies and onion. I cut the pepper into rings, and I'm going to pre-
cook them a bit as well, the same way. The onion will go on last,
raw.
.........

OK, it's in the oven now.

.........

It turned out well. It wasn't so much that the veggies were
thoroughly cooked, as that they were not soggy. Another advantage for
the mushrooms is that not only were they somewhat dessicated, but they
were pre-shrunk, which made it easier to fit more on. Other than the
extra hassle, I can think of no downside to pre-roasting veggie pizza
toppings. I suspect that several of you here will think I've
reinvented the wheel, because I'd be very surprised if I was the first
person to do that.

--Bryan