Step 1

Process all ingredients, except caster sugar, together in a food processor until mixture resembles fine breadcrumbs.

Step 2

Press mixture together until it forms a dough. Divide dough in two.

Step 3

Roll out dough between 2 sheets of baking paper until 5mm thick.

Step 4

Using a star-shaped cutter, cut shapes from dough. Transfer to prepared trays. Sprinkle with caster sugar if desired. Bake at 160 degrees for 30 minutes or until dry and firm but still pale. Transfer to a wire rack to cool completely. Dust with icing sugar. Serve.