These are my all time favourite biscuit. The recipe comes from my maternal grandmother. I have very fond memories of going on summer holidays to her house and enjoying snacking on these incredibly tasty treats. Crunchy on the outside and chewy in the centre - though be careful, they're addictive and the whole batch will be gone before you know it!
Preheat the oven to 180 degrees C (170 for fan forced) and heavily grease two large baking trays.
Cream the butter and sugar with an electric mixer until pale and fluffy (aka light and creamy) then beat in the vanilla essence.
Whisk the eggs then gradually add to butter mixture while keeping the electric mixer on high (avoid curdling by having the eggs at room temperature and adding to the butter mix gradually as it beats).
Fold in the flour and continue to beat with the electric mixer until well combined.
Lightly crush 3 cups of the cornflakes, then fold these into the mixture with the chocolate chips and sultanas using a wooden spoon, until evenly dispersed.
Drop dessert spoon sized balls of the mixture into the remaining uncrushed cornflakes and roll until coated, then press lightly onto the baking tray.
Bake in moderate preheated oven for 15-20 minutes or until just golden. Remove from oven and allow to cool on the trays for 15-20mins before removing to wire racks (should be still warm when removing).
You can also use baking paper instead of heavily greasing the tray - my grandma swears by the greasing but they turn out just fine on baking paper and don't make as much mess - it's up to you. It usually depends how lazy I'm being as to whether I'll grease or line the trays... - 29 Mar 2010