Preheat oven to 180C.
Line a baking tray with baking paper.
Using an electric mixer, cream butter and sugar in a bowl until pale and creamy.
Add the egg and mix to combine.
Add the flour and stir until just combined.
Using 2 teaspoons of dough at a time, roll into balls.
Place on prepared tray, allow room for spreading.
Gently press with the tines of a fork.
Bake for 12 to 15 minutes or until lightly golden.
Cool for 5 minutes before serving.
Store in an air-tight container for up to one week.