Line a small container (up to 10cm x 20cm in size) with non-stick baking paper

Place the dates, peanut butter and vanilla in bowl of a stick mixer and process until the mixture turns into a paste

Scrape down the sides between pulses, to ensure everything combines

Transfer the mixture to a bowl and mix in the puffed rice and peanuts

Press the mixture into the prepared container and pour the melted chocolate over the top

Refrigerate for 30 minutes or until set Lift out of the container and use a hot knife to cut into bars

Return to the container and keep in fridge