Preheat oven to 180°C/350°F (160°C fan forced).
Line 2 baking trays with baking paper.
Mix flour, oats, coconut and sugar in a bowl.
Place butter and golden syrup in a saucepan over medium high heat and stir until butter has melted.
Add baking soda and stir to combine - it will fizz up, this is normal. Immediately remove from heat.
Pour butter mixture into flour and mix until just combined. The mixture will be crumbly but should stick when you press together.
Scrunch / press 1 tablespoon of the mixture into balls, then flatten into patties. (Thinner = crisper, thicker = chewier centre, crispy edges) Place balls, 2.5 cm/1" apart, on prepared trays.
Bake for 15 minutes, swapping trays halfway during cooking, or until deep golden. (Bake 12 min for chewy biscuits!)
Stand on trays for 5 minutes. Transfer to a wire rack to cool - they harden as they cool!
