Whole Plum Cakes

Beat the butter and sugar until light and fluffy. Add the eggs, vanilla, almonds and flour and beat until just combined. Cut the plum round the stone and twist to separate both halves. Remove the stone. Put the two halves of each plum in individual ovenproof ramekins, as if building the whole plum again. Pour the batter around the plum and bake at 200C for 15 to 20 minutes, until golden.