Heat a knob of butter in a large, non-stick frying pan over a medium-high heat. Once the butter is melted, fry the brioche slices for two minutes on each side until golden-brown and crisp.

Preheat your oven to 180°C and grease a large ovenproof dish with the knob of butter. Bush the plums with the egg white and then roll them in the caster sugar to coat them. Place onto the ...