Place mince in a large bowl, add 1 chopped onion (keep other onion to one side for the sauce), add minced garlic, bread crumbs, egg, mixed herbs, S & P and mix up with your hands until it all comes together.

Put 2 tbsp Olive oil into baking dish. Roll the mince mixture into balls about 1 inch round (press the mince mixture firmly between your palms to get rid of any air pockets - to insure that they do not break apart while cooking. Then roll into a ball.) and place in a baking dish, coating them with the olive oil.

Bake for about 20 minutes at 180°C until nicely browned, turn half way though cooking so the underside gets browned as well.

Fry the chopped onion that you had put aside in a little olive oil until glassy. Add the tinned diced tomato and some more mixed herbs, S & P to taste.

Add the tomato sauce to the meat balls and bake for an additional 25 minutes or so until the meat balls are cooked through and the sauce is thick and bubbling, turn them once or twice to ensure they are cooking evenly.