Put selfraising flour, butter and sugar (the 110 grams) into a kitchenprocessor and combine to a crumbly mixture. While turning add the buttermilk and the vanilla xtract and turn until it comes together. It will be sticky and quite thick.
Add 2/3 of the pomegranate seeds and stir those in (with a spoon)
In another bowl combine cranberries, sugar, cinnamon, the rest of the pomegranates and vanilla marrow and stir together well.
Assemble a few ovendishes you want to use (or one big one) and fill with the cranberry mixture. Spoon the dough on top of it with two spoons. It's ok if it's not smooth.
Sprinkle with the almond slivers.
Put into the oven for 40-45 minutes and serve with vanilla sauce or whipped cream.