Wash all vegetables with fresh water, peel the potatoes and cut their tops and emty most of their inside content with a spoon . Mix all vegetable fillings that you have removed in a food processor with the tomato paste and the onion. Pour this mix into a bowl . Add the olive oil , lemon juice , the fennel or anise and the parsley all finely chopped, salt , pepper , oregano, the rice some water and mix well with a spoon. Fill the vegetables with the rice mix, cover with their tops you have removed earlier. Place in the bottom of a cooking pan the stalks from the fennel and parsley and then place the stuffed vegetables in layers , first the potatoes , then the peppers , then the tomatoes and finally the zucchini. Add some water, cover the cooking pan and cook over low heat for about half an hour .
