Italian
Heat the olive oil in a large frying pan over medium-low heat, add the sliced garlic and chili flakes and cook for 1-2 minutes, until the garlic is pale gold.
Add the tomatoes, crush them with a spoon, season with salt and simmer uncovered for 20 minutes, until thick.
Meanwhile, cook the penne in a large pot of boiling salted water for 1 minute less than the package time. Reserve 100 ml of the cooking water, then drain.
Add the penne to the sauce with a splash of the cooking water.
Toss over high heat for 1-2 minutes, until the sauce clings to the pasta.
Stir in the parsley, taste for salt and heat, and serve at once.