Wash and halve the cherry tomatoes. Peel and finely chop the onion. Heat the oil in a wide saucepan. Fry the onion over medium heat while stirring until transparent. Add risotto rice all at once.
Continue roasting for 1-2 minutes while stirring until the rice grains begin to crackle quietly.
Tip on the edge: The grains should be nice and glassy, but not golden brown in colour, and tomatoes should be steamed for about 1 minute. Add the can of tomatoes and the juice. Chop a little with a wooden spoon. Dissolve vegetable stock in hot water.
Add the stock little by little. Simmer rice open at low heat for 30-35 minutes while stirring. Meanwhile roast pine nuts in a pan without fat until golden brown. Take them out. Fold the ricotta and pine nuts into the finished risotto.
Season to taste with salt, pepper and sugar. Wash the basil, remove the leaves and sprinkle on the risotto.