Step by step
Cover the oven dish with tin foil and cook in the oven for 15 minutes. If you wish, you can serve with a sprinkling of parmesan
Tips
To make your pesto sauce, you can use a food processor with plastic blades, since these prevent the oxidation of the leaves (unlike metal blades).
Trivia
To avoid getting a bitter or overly strong tasting pesto sauce, use basil leaves that have been well dried and above all are intact.