METHOD
Put the flour – I use light spelt flour – into a big bowl and make a well in the middle. Put the sugar and the salt into the well, crack the egg on top and place the butter in lumps on the flour rim. Use a butter knife and cut through the whole thing criss cross from all directions. Once the mixture has started to become doughy, use your hands and quickly knead an even shortcrust pastry. The dough is not supposed to become warm and gooey because then it won’t stick properly. Form a ball, cover it with cling film or a kitchen towel if you have a plastic free household and let it rest in the fridge for an our.
In the meantime remove the cores from your washed damson plums. There is a certain way my granny used to prepare them: she cut the plums along their seam so you can open the fruit up like a book and take out the stone. You then incise the tops of the wings about half an inch each. This way you get slightly crispy, aromatic edges.
Pre-heat your oven to 200°C. Grease a round springform tin with a diameter 26cm and put in the shortcrust pastry. I usually roll it out a bit on a floured tabletop with my rolling pin and finish with my hands inside the tin. Forming a rim of half an inch helps to contain the juices. Then arrange the plums upright and snug on the base starting with the outer row moving into the centre.
Put all the crumble ingredients in a bowl and mix them quickly but thoroughly with both of your hands. I like crumble with big lumps because this way it will be crispy on the outside and still a bit soft on the inside.
Put it on the oven and bake for 35 minutes. After the baking let it rest until it is only very slightly warm because then the juices won’t be runny anymore and you can even flip the cake over onto a baking tray to get it out of the tin and back onto a plate.
My granny used to serve the cake still slightly warm with whipped cream. Vanilla ice cream is also an option of course. I love this cake for so many reasons. It just tastes divine while being a real quickie: so simple to make and even the baking time is much shorter than most of the cakes make.