Combine flours, ginger, cinnamon, sugar and butter in a food processor. Process until mixture resembles bread crumbs
With motor running add egg mixture and process until dough just comes together
Turn onto a lightly floured surface and knead gently until smooth.
Cut dough in half and wrap in plastic wrap. Refrigerate for at least 4 hours.
Roll dough to a 5 mm thickness, cut and bake at 180 C 15 mins