Pour a good splash of olive oil into a large pot and bring up to a medium heat.
Olive oil
Add the onion and gently cook for roughly 5 minutes until translucent and softened.
1 onion
Pop in the garlic and dried chilli flakes. Stir for 1 minute.
6 cloves garlic, 2 teaspoon dried red chilli flakes
Pour the tinned plum tomatoes into the pan. Stir well, and then bring up to the boil, and reduce to a gentle simmer for 10 minutes.
800 g peeled plum tomatoes
Now, grab a potato masher, or alternatively a wooden spoon, to carefully help the tomatoes to break down. Gently mash the tomatoes until crushed.
Simmer for another 50 minutes, stirring occasionally. Keep the pot uncovered.
Just before the arrabiata sauce is ready, cook the spaghetti according to the packet instructions. It should take around 10 minutes. Once cooked, drain the spaghetti but don’t rinse it.
300 g dried spaghetti
Season the sauce generously with salt, sugar (optional, but recommended) and stir in the chopped fresh basil.
Salt, 1 teaspoon sugar, 0.5 cup fresh basil
Finally, stir the cooked spaghetti through the arrabiata sauce until well coated.