Prep veg: slice mushroom, set aside. Wash, seed, slice bell peppers, set aside. Peel onion, slice into rings, cut those rings in half. Set aside.
Heat oil in Actifry for 2 minutes.
Add onion, cook for 5 minutes.
Add green pepper, cook for another 10 minutes.
Add mushrooms, cook for another 15 minutes.
Purée tomatoes in blender if using fresh (or open the cans) and add to Actifry
Add herbs of your choice to taste (oregano, basil, marjoram etc -- either fresh or dried is fine. If using dried, about a teaspoon of each maybe?)
Add tomato paste, stir in to bury all the herbs so they don't get blown around.
Cook for an additional 65 minutes.
Notes
If you use canned, whole tomatoes, purée them in a blender or food processor before adding.This is a very simple, neutral tomato sauce that you could take in almost any direction or use however you wanted: by adding roasted veg, cooked ground beef, using as a sauce on omelettes, etc.Store sauce in refrigerator and use up within 5 days, or package and freeze.