Method In a heavy saucepan, sauté the, onion and carrot in the oil until the onion is lightly coloured. Add the garlic and cook briefly. Add the tomatoes and simmer the sauce for 15 minutes.
Add in the Ricotta and heat briefly. Just before serving, add in freshly torn basil. For the spaghetti, cook as per the packet instructions. Add the spaghetti to the sauce, adding a little of the cooking water, if the pasta is sticking and serve immediately.