Zucchini baked in an oven or stewed in a pan retain their beneficial properties as much as possible (as you know, they contain vitamins C, PP and many others).
One zucchini, cut into two parts. We take out the seeds with a spoon, we get boats. Cut vegetables: tomato, onion, sweet pepper. We lay this stuffing in a boat (zucchini). We put a little grated fresh ginger, a clove of garlic (through the garlic). Salt and pepper to taste. I used the Italian Herb Mill.
Sprinkle grated parmesan on top and put in the oven preheated to 220 degrees. 20-30 minutes and you're done!