Preheat the oven to 180C/350F degrees.
Take a large ball of the dough and place it between two sheets of parchment paper, slightly flattening it with your hand before rolling it.
Cut a circle out with either a large cookie cutter or a glass (as I did).
Remove the pastry circle and spoon about 1 tablespoon of the spinach Feta mixture onto the circle, slightly over of the middle.
Pinch 2 ends first and then the third to form a pyramid.
Place the spinach feta triangles on a parchment paper lined baking tray and bake for 25 minutes until firm and slightly golden.
Put the spinach feta triangles under a hot grill for 3 to 5 minutes to give them a golden brown finish.