Ice cream sandwiches
Mix the ice cream with the pistachios. Spoon approx. 2 tbsp of ice cream onto 4 separate biscuits, top with the remaining biscuits. Freeze the biscuit sandwiches for approx. 30 mins.
Dip the ice cream sandwiches halfway into the glaze, sprinkle with pistachios, dry for approx. 2 mins. on a rack. Freeze for a further 30 mins.