Crunchy tea biscuits with cornflakes, raisins and pine nuts

Difficulty:   Time:  INGREDIENTS (x 10 persons) - 150g unsalted butter, softened - 100g caster sugar - 2 large free-range eggs - 200g plain non-raising flour (“00”) - ½ tsp vanilla-flavoured raising powder - 120g rolled oats - 1 large handful raisins - 20-30g pine nuts - rum (optional) - 150g of cornflakes - icing sugar for decoration ...