I do it every year with my Romas. I slice them and put them on a plate in
the microwave and nuke them on very low (1 or 2) for a long time (half hour
or more) until they look like sundried tomatoes. Check on them every five
minutes towards the end so they don't get overcooked. Then I store them in
olive oil in the fridge. Yummy!!
-Peg

David Hare-Scott wrote:

As I understand it sun drying tomatoes (or any fruit) is a race to get
them dehydrated before the mould and fungus take over.

Has anybody sun-dried their own tomatoes or worked where they do it?
What conditions of sunshine and humidity are required and how long does
it take?

Conversely, has anybody tried it and the mould won? What were your
conditions?

David