Crush the Ryvita by hand into small pieces or pop them in a food bag and smash them with a rolling pin.

Put the Nutella in a microwave proof bowl and soften in the microwave for about 20 seconds.

Add the crushed Ryvita to the melted Nutella and mix together well.

Scoop up some of the mixture and roll into small balls in your hands - about an inch and half or so wide. Wet your hands with cold water every so often to stop the balls from melting too much in your hands.

Place on greaseproof paper on a tray and place in the fridge to set.