Heat the oil in a frying pan over a medium heat and fry the garlic and chilli flakes for 2-3 mins until fragrant and the garlic is lightly golden. Tip in the chopped tomatoes and bring to a simmer. Cook for 10 mins until the mixture has slightly thickened. Season well.

Cook the penne in a pan of boiling salted water for 10 mins until al dente. Drain, reserving a mugful of the pasta cooking water.

Tip the pasta into the sauce, scatter with most of the basil and toss to combine. Add a splash of the reserved pasta cooking water to help the sauce coat the pasta, if needed. Scatter with the remaining basil to serve.