Wash the basil, dab dry, pluck leaves from the stalks. Put some leaves aside for garnishing. Cut the rest into small pieces. Wash and clean the zucchini, cut in half lengthwise and cut into slices.
Peel, wash and slice the carrots. Clean, wash and cut out the chard. Cut leaves into small pieces. Onion peel, cut in columns. Cook pasta in boiling salted water according to package instructions.
Heat the oil in a frying pan. Fry the vegetables for about 5 minutes, turning them over and deglazing them with white wine. Stir in ricotta and vegetable stock. Bring sauce to the boil, season with salt, pepper, nutmeg and basil.
Drain the pasta, let it drain. Fold in vegetable sauce, arrange on plates, garnish with basil leaves.