Whisk together pastry or all purpose flour, cinnamon and salt together, set aside.

Using a stand mixer, hand held mixer or wooden ladle and a mixing bowl, beat margarine or butter and fine sugar together until combined. Mix in vanilla essence and egg yolk, turning the speed to low, add the flour, mixing to form a smooth dough. Do not over-mix. Shape the dough into a disk and chill in the refrigerator for 30 minutes to an hour.

Preheat an oven to 180˚C/ 350˚F and line a baking sheet with parchment or baking paper. Roll the dough to a thickness of 3/8-inch, between two sheets of parchment or baking paper.

Cut star shapes using a cookie or biscuits cutter. Generously spread biscuits with cinnamon sugar. Bake on baking sheets lined with baking or parchment paper for 12 to 15 minutes, or until the cookies feel firm around the edges and golden.

Biscuits can be stored in an airtight container at room temperature for seven days and unbaked cookie or biscuits dough can be kept in the freezer for three months.