Mix the egg, egg yolk, powdered sugar and the pulp of the vanilla pod in a saucepan. Then whip in a water bath until frothy and allow to cool.
Whip the cream and fold with the crumbled oreo biscuits into the cooled egg mixture. Pour the parfait mass into small glasses or into a loaf pan lined with cling film and cover with cling film.
Place in the freezer for about 6 hours. Then turn out and serve with Oreo biscuit halves and raspberries if necessary.