Preheat Oven: Preheat your oven to 180°C (350°F). This ensures that the borek bakes evenly and achieves a nice golden color.

Prepare Butter and Oil Mixture: In a bowl, mix the melted butter and oil. This mixture will be used to brush between the layers of phyllo dough.

Layer Phyllo Dough: Lay one sheet of phyllo dough on a clean surface and brush it with the butter and oil mixture. Repeat this process, layering and brushing each sheet until you have a stack of 4-5 sheets. The butter and oil help to separate the layers, making them crisp up beautifully in the oven.

Add Filling: Sprinkle a generous amount of crumbled feta cheese and chopped parsley over the top layer of the phyllo dough. The combination of feta and parsley creates a flavorful and aromatic filling.

Roll the Dough: Roll the layered phyllo dough into a log, starting from one end. This rolling technique ensures that the filling is evenly distributed throughout the pastry.

Prepare for Baking: Place the rolled dough on a baking sheet lined with parchment paper. Repeat with the remaining phyllo sheets and filling to make multiple rolls. Brush the tops of the rolls with the remaining butter and oil mixture, which helps them turn golden brown and crispy.

Bake: Bake in the preheated oven for 20-25 minutes, or until the pastry is golden brown and crispy. Keep an eye on the borek to prevent over-baking.

Serve: Remove from the oven and let cool slightly before slicing. Serve the borek warm and enjoy the crispy, flaky layers filled with savory cheese and herbs.