Preheat oven to 180°C.
Split plums in half and remove pits.
Place into baking dish with vanilla bean, and sprinkle with the sugar.
Roast 30 minutes until well softened and juicy.
Cool.
Place roasted plums and all remaining ingredients into TM bowl and blend 10 sec/speed 10.
Spread onto a lined tray and freeze for several hours until very solid.
Chop into pieces and place into TM bowl. Blend 10 sec/speed 10.
Serve immediately as a palate cleanse or as a light dessert.