From parchment paper in a 30×40 cm baking sheet, form a form with sides, grease with vegetable oil and pour out the zucchini dough. Put slices of zucchini on top. Bake at 180 degrees for about 20 minutes. The finished cake is turned over on a clean parchment, so that the zucchini circles are at the bottom, remove the parchment, cool.