Put the sponge case (pie shell) on an ovenproof
plate. Whisk the egg whites until stiff.
Whisk in
half the sugar and the vanilla essence and continue
whisking until stiff and glossy. Fold in the
remaining sugar.
Pile the scoops of ice cream in the
flan case. Cover completely with the meringue
mixture.
Bake in a preheated oven at
230°C/450°F/gas mark 8 for 2 minutes until the
meringue is just turning golden. Serve straight away
before the ice cream melts.