Flapjacks come in all shapes, sizes and with many different ingredients. Some are healthy and some like this chocolate and toffee flapjack, are simply delicious and you really will need to forget the calories, just this once. The main ingredient in flapjacks are oats and the best ones for this recipe are porridge oats. They not only add flavour to the flapjack, but also add texture. The oats are bound together with golden syrup, butter, and in this recipe the chocolate-toffee nibs. It is eesential that you leave the flap jack to cool completely in the tin before even a thought of eating-tempting as it may be. If you eat it too soon it will simply fall apart. Once cooled it will still crumble a little, but that's flapjack