Spaghetti in Arrabbiata Sauce

For the Arrabbiata Sauce :
1 medium sized onion - very finely chopped
7-8 medium sized red ripe tomatoes blended to form a puree with a lumpy texture (not too smooth)
1 spn. garlic paste
1/2 cup olive oil
Heat the oil in a pan, add the onion & garlic & saute till they turn golden, now pour in the tomato puree & continue to saute till the water almost dries up, add salt to taste, a tspn. each of black pepper powder & red chilly flakes, oregano or basil whichever u like
Now add a cup of water & boil & simmer for a while to get a thick gravy like consistency

Boil Spaghetti or Fettuccine in a large pot of water with a spoonful of salt & 2 spns. oil till it is well cooked, drain & rinse the paste in running water & keep aside
If u like u may saute sliced Red & Yellow bell peppers, Zucchini, Broccoli in olive oil & add to the dish
Now in a large wok or pan, heat the prepared sauce & the sauteed vegetables & toss in the boiled pasta of ur choice & mix lightly for about 3-4 mins so that the pasta soaks in the flavors of the sauce & is well coated
Make sure its not too dry or u may adjust the quantity of water in the sauce while heating before u add  the pasta
Serve hot !!