This is my recipe to use up fresh tomatoes. You can make plenty of this then freeze & turn it into whatever you like....soup, base for bolognaise sauce, for lasagna, basic pasta sauces etc....the list is endless.
Put the tomatoes in a baking dish, drizzle with oil & season, cook in oven at 160 c for approx 20 minutes Remove skins & set aside.
Gently fry the shallots/onions & garlic 'til golden. Add the tomatoes & stock. Bring to the boil then simmer gently for at least 20 mins then add basil & liquidise/blend. Continue simmering for a couple of minutes or if you want it thicker, leave to cook until desired consistency.
(a pinch of sugar is good if tomatoes aren't nice & sweet).
This freezes well & is a good sauce base. If you want it as soup add a little cream/creme fraiche etc.