These savory puff pastry triangles are filled with a delicious mixture of spinach, feta cheese, and herbs. They make a perfect appetizer or snack for any occasion. The puff pastry is light and flaky, while the filling is creamy and flavorful. These triangles are easy to make and can be prepared ahead of time, making them a great option for entertaining. Serve them warm or at room temperature for a delicious and satisfying treat.