Decent easy recipe for tomato based sauce suggestions

Lizling

Emergency tomato sauce
Passata
Basil and any other herbs you want to use e.g. oregano
Balsamic vinegar or red/white wine vinegar or squeeze of lemon juice
Little bit of veg stock
Salt and Pepper

Proper tomato sauce
Mine’s exactly the same as Splishsplash’s, except that I leave out the Worcester sauce because I’m veggie and substitute a little bit of soy sauce instead. It’s even better with slightly overripe tomatoes that need using up instead of chopped tomatoes/passata, but you’d probably need to remove the skins for your fussy eater or you’ll have bits in it.

You’ll probably need extra sugar and salt if you’re trying to make it taste more like the jar stuff.

trolleyrun

A bit of sugar in passata/chopped tomatoes takes away the acidity so it tastes better

krlyr

Overdoing the tomato puree can give it a bit of a bitter taste too so be careful with that. I tend to do a few big squeezes from a tube, or half of the mini tin of double-concentrated stuff - probably a couple of tablespoons.
What I tend to do is have the wok with it in, simmering away, and add all my base ingredients. Then I add herbs, sugar, salt, etc. bit by bit, give it good stir and a minute to simmer, and taste. That way I can add more, or a different ingredient, until I like the flavour.
Like splishsplash, I add a little chili powder if I'm making a bolognese sauce. Not loads, it's not a chili afterall, but it just gives it a little 'something'. For a chili I'll add chili flakes and some other spices.