Preheat the oven to 180°c/ 160fan/ 350F and line 2 large baking trays with non stick baking paper.
Melt the butter, sugars, and golden syrup in a saucepan over a low heat. Stir with a wooden spoon to prevent the mixture from sticking to the bottom of the pan.
100 g Butter, 50 g Caster Sugar, 50 g Light Brown Sugar, 2 tablespoon Golden Syrup
Once melted, take off the heat and mix in the vanilla extract, and dry ingredients (flour, bicarbonate of soda, and rolled oats).
1 teaspoon Vanilla Extract, 100 g Self Raising Flour, 100 g Oats, ½ teaspoon Bicarbonate of Soda
Spoon heaped teaspoons of the cookie dough onto the lined baking trays (spaced well apart) and bake in the oven for 10 minutes until golden. Cool for 5 minutes before transferring to a wire rack. Allow to cool to room temperature before eating!