Preheat the oven to 175 degrees C and line two baking trays with scrunched baking paper
Place the butter and sugar into the bowl of an electric mixer and beat until pale and creamy
Add the egg and vanilla essence, and continue beating until smooth
Add in the flour, spice and baking powder, and mix until just combined
Stir in the white chocolate chips and macadamia nuts
Roll heaped tablespoons of the mixture into balls and flatten into disc shapes.
Place them on the baking trays, leaving a 3-centimetre gap between each
Bake for 12 to 15 minutes or until lightly golden