Place butter, sugar and golden syrup in the bowl of an electric mixer and beat until pale and creamy. Set aside.
Mix baking powder, spices, salt, plain flour, and wholemeal flour in a bowl until well combined.
With the electric mixer on medium speed, add egg to butter mixture, beating until just combined.
Gradually add flour mixture and beat until just combined. Don't over-beat, or you'll make the biscuits tough.
If you're making sliced bikkies, roll into a tube or sausage shape. If you're rolling out and cutting into shapes, flatten into a disc.
Wrap the dough in plastic wrap and refrigerate for 30 minutes to rest; don’t worry if it still feels soft.
Preheat oven to 180°C and line 2 large oven trays or 4 small ones with baking paper.
Roll out dough to about 5mm thick and cut into shapes, or cut 5mm thick slices from the roll.Thicker biscuits are chewier; thinner are crispy and more gingernut-like.
Place biscuits on lined trays, leaving 3cm between each one.
Bake for 12 minutes, swapping trays halfway, or until golden.
Set aside to cool on a wire rack.
Notes
Biscuits will keep in an airtight container for up to 1 week. Delicious with mulled wine in winter. Amazing for dunking in tea or coffee. Try with a Caysha coffee!