Preheat the oven to 220C/425F/Gas 7.
For the biscotti, place all of the ingredients ingredients into a bowl and mix together well with floured hands. Form into a long cylinder 5cm/2in wide.
Place the biscotti cylinder onto a baking sheet and place into the oven to bake for 15 minutes, or until golden and cooked through.
Meanwhile, for the vanilla cream, mix together all of the ingredients in a clean bowl and place into the fridge to chill until ready to serve.
Remove the biscotti from the oven and, when it is cool enough to handle, slice into 1cm/½in rounds.
To serve, spoon some of the vanilla cream into a serving bowl and place some of the biscotti rounds over the top.
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