Zucchini grate, add the egg, flour and soda. To make the dough as pumpkin fritters. It should "drip" off the spoon (not leaking). Form of grease with butter and evenly spread 2/3 of the dough. Put in a preheated 200 deg. oven for about 15 minutes until Golden brown. Prepare the filling: mushrooms and onions to chop, fry. Then remove the dish, put the stuffing, the tomatoes and pour the remnants of the test. Put back in the oven until Golden brown. Serve warm. Bon appetit!!!