Step 1

Preheat oven to 180°C. Line a baking tray with baking paper. Sift the flour, cinnamon and baking powder into a bowl. Whisk the eggs, sugar, orange rind and vanilla in a bowl.

Step 2

Make a well in the centre of the flour mixture and add the egg mixture. Stir until a stiff dough forms. Turn onto a lightly floured surface and knead gently to form a ball. Divide the dough into 3 portions. Shape each portion into a 20cm-long log. Place each dough portion 5cm apart on the lined tray. Bake for 20 minutes or until golden. Cool for 20 minutes. Reduce oven temperature to 160°C.

Step 3

Use a serrated knife to cut each log diagonally into 5mm-thick slices. Return to the tray. Bake for 10-15 minutes or until crisp and golden. Transfer to a wire rack to cool. Dust with icing sugar.