Preheat oven to 200C/fan.
Wash and half the tomatoes and peel the garlic cloves. Then peel the onion and cut them into chunks. Put them in an oven-safe form and drizzle with olive oil.
Bake for about 20 minutes or until soft. Put the veggies into a pot and use your hand mixer (immersion blender) to mix everything together.
Add tomato sauce and bring to a boil. Add heavy cream or coconut cream. Let it simmer and add lemon zest, fresh basil and chilli flakes. Then add the rest of the spices. Let it simmer for 15 more minutes.
Cook pasta if you want it. Otherwise, you can skip this step.