Put the onion in the bowl, chop: 5 sec. speed 7.
Gather on the bottom with the spatula, add the oil, fry: 2 min. 100° speed. Soft.
Add the rice, toast: 30 sec. 100° Reverse speed. Soft.
Add the broth, cook: 14 min. 100° Reverse speed. Soft.
In the meantime, wash and clean the zucchini, cut them into fine julienne strips.
Add them to the rice 5 minutes before the end of cooking, together with the grated lemon peel.
Check the salt and cook the rice and if necessary extend the cooking for a few minutes.
Let it rest for a few minutes in the unplugged bowl.
Then add a knob of butter and stir with the help of a spatula. Dish and serve... Buon appetito!
*For those who are intolerant to dairy products, it is possible to replace butter and Parmesan with lactose-free one. For vegans, on the other hand, it is possible to replace butter with soy butter or oil.
If you don't like lemon, you can not use the lemon peel during preparation.