Preheat the oven to 180°C/ 350°F/Gas mark 4.
Either on the hob or in a microwave: melt the butter till runny. Stir in the golden syrup. Then stir in the sugar. Continue to stir until sugar is completely dissolved.
In a bowl weigh out the Glebe Farm Oats and stir in the syrup mix.
Line a rimmed baking tray 20 x 20cm with foil.
Empty flapjack mix into baking tray and press down all the mixture evenly to 1-2cm high.
Bake in oven for 20 minutes approx until brown on top. Cool, pop in fridge then after 2 hours cut into squares.