Heat another pan, add olive oil and butter, then add crushed garlic, bellpeppers and broccoli and basil leaves, toss this for a minute. Then add salt & pepper and again cook the veggies for another minute. Now add the prepared sauce, add a pinch of sugar, oregano, chilli flakes, ketchup and mix well, now add the boiled spaghetti and give the pasta a final toss.