Preheat oven to 180 degrees celsius (fan-forced). Line 2 baking trays with baking paper and set aside.
Place the butter, golden syrup and brown sugar into the TM bowl. Melt for 2 minutes, 80 degrees, Speed 2. Scrape down the sides of the bowl.
Melt for a further 2 minutes, 80 degrees, Speed 2. Leave to cool slightly.
Add the self-raising flour to the TM bowl and mix for 20 seconds, Speed 2. Scrape down the sides of the bowl and repeat.
Form tablespoon sized balls with the dough and place onto the baking trays. Press down lightly with a fork.
Bake for 10 minutes or until just golden. Leave on the baking trays for 5 minutes before transferring to a wire rack to cool completely.
Store in an airtight container at room temperature for up to 5 days (the cookies will soften over time but still as delicious!)