Heat oven to 200C/180C fan/gas 6. Mix
the sugar and cinnamon in a bowl. Whisk
egg white, then roll the plums first in egg
white and then the cinnamon sugar until
very well coated in a sugary crust.
Space apart in a buttered baking dish,
then bake for 15 mins or until the plums
are crusty, cooked through and starting
to be juicy. To test, poke in a cocktail
stick; if it goes in easily, they are ready.