Learn how to make Filo Pastry triangles filled with feta cheese, mint and peas by following this Filo Pastry recipe. Folding filo pastry in a triangle shape is a great way to create a little parcel which can be filled with many fillings, both sweet and savoury. How do I make filo pastry triangles? What can I fill filo triangles with? Follow our recipe to learn how to make these Filo Pastry shapes