First, preheat the oven to 180 degrees Celsius. If we use homemade dough, it is better to semi-cook it first or put the pizza in the oven for 20 minutes first so that the dough cooks faster. Spread the marinara sauce on the dough and sprinkle with Parmesan cheese powder.
Then add grated mozzarella cheese and chopped walnuts.
Then add the zucchini, onion and chopped green beans. Bake in the oven for 25-30 minutes until golden.