I do the same.

I grow my own tomatoes. I puree them in a food processor and then reduce them in a cast iron pot. By reducing them it cuts down on the dehydrating time.
I use a lot of garlic and pepperocino (pepper flakes) and salt. It is a very simple sauce.

Once it becomes a leather I break it up again in the food processor and then grind it to a fine powder in a coffee mill. Then it can either be used as a sauce alone or combined with a pasta and cooked and dehydrated as a one pot meal.

frank