Boil water in a pot. Add pasta, salt, and oil. Allow it to cook.
Strain the water. Rinse the pasta in cold water and strain it again. Add little oil and toss the pasta to apply the oil evenly. Keep aside.
Meanwhile, put tomatoes in a blender and make a smooth tomato puree.
In a hot wok or pan add oil, add garlic and onion. Saute until the onion becomes translucent.
Now, it is time to add the tomato puree. Then, add salt, oregano, Italian seasoning, and chilli flakes. Cook well until the tomato puree thickens into a pulp. Add olives.
Add pepper according to your preference.
Mix the pasta with sauce before serving.
Serve hot with steamed vegetables for a complete meal.