why do my flapjack efforts all end in disaster

[cranbury]

i have been trying to make flapjacks for nearly 20 years - all have ended in failure, honestly I am losing hope. I even tried a Mary Berry fool proof recipe a couple of days back and toffee like thin inedible result again.

I am honestly a good cook and I can make some really complicated stuff why can't I make flapjacks just oats, butter, sugar and golden syrup.
I make sure I have the right tin, I have a hot oven but I adjust 30 degrees down and that works for everything else.

Help help help.

mine are hit and miss but i find cooking them for only 15 minutes then letting them set for ages before cutting up works

I did a thread on this a while ago, with some good results. Hold on and I'll see if I can find it...

here