Boil pasta in hot boiling water by adding little oil and some salt.Let it cook for 10 mins.

In a pan, add some oil and then saute garlic, onion and let it turn translucent.Add the pasta sauce.Stir well and let it cook for some time.Add chilli flakes,oregano,salt and mix well.

Stir well and add in the boiled penne pasta.Garnish with some olives and grated parmesan cheese.