Passata Sauce

a lot of tomatoes (to fill a baking dish)1 red onion4 garlic clovesoptional fresh rosemary, oregano or fresh basil extra virgin olive oil place tomatoes, olive oil, red onion, garlic cloves (keep the skin on when roasting to not burn, it will caramelise) and cook in the oven on 160 degrees Celsius for about 45…