Wash the plums and remove the pits. Place the plums in a big pot. Add the maple syrup, water and spices.
Cook the plums for about an hour. Do not forget to stir the mixture from time to time.
In the meantime prepare the crumble. Melt the coconut oil, if not liquid. Then join it with the spelt flour and maple syrup. The crumble should look similar to fine breadcrumbs.
Now pour the plum mixture into a middle-sized ovenproof dish and sprinkle it with the crumble topping.
Bake the dessert in the oven preheated to 200°C for 20-30 minutes.