Why do my flapjacks go hard?
Flapjacks can go hard if the temperature is too high when heating the butter, sugar and syrup mixture on the hob. Instead, keep it on a low heat, stirring occasionally. During baking, rotating the tray in the oven can help them cook more evenly. The oven temperature can also affect the texture, so bake your flapjacks until golden and slightly soft in the middle (bear in mind that they will harden slightly after cooling, too).
What holds flapjacks together?
Butter and syrup are the binding agents that help hold flapjacks together, meaning you end up with deliciously chewy, buttery slices.