Preheat the oven to 170° Celsius

Place the plums cut side down into a greased 23cm spring form tin

Place the fructose and butter into a stand mixer bowl and cream together

Add the eggs, one at a time, mixing to combine

Pour in the vanilla extract and mix to combine

Fold in the cornflour, almonds, flour and baking powder until just combined

Pour the batter over the plums, smooth down the top and bake for 45 minutes

Remove from the oven and and leave to cool in the tin before turning out

Flip so that the plums are on top and cool on a wire rack before transferring to a serving plate