Spanakopita is a traditional Greek dish made with layers of phyllo dough and a filling of spinach, feta cheese, onions, and herbs. Using a food processor to make the phyllo dough simplifies the process and ensures thin and crispy layers. The filling is made by sautéing the spinach with onions and mixing it with crumbled feta cheese and herbs. The phyllo dough is then layered with the filling and baked until golden and crispy. Spanakopita is a flavorful and satisfying dish that can be served as an appetizer or a main course.