Pre-heat the oven to 200 degrees,
Cut the plums in half, remove the stone and place each plum half into the bun/fairy cake tin,
Combine the ginger biscuit crumbs with the butter and using your fingers rub in the mixture until it resembles fine breadcrumbs,
Add in the brown sugar and the oats,
Scatter the mixture over the plums, patting it down firmly with the palm of your hands,
Top with seeds and almonds as swell as some cinnamon or ground ginger if you like,
Bake for 10-12 minutes,
Serve with custard, cream or ice cream.