Get started by preheating your oven to 160C and line a large baking tray with baking paper.
For your crumble, combine the listened ingredients in a bowl and mix well to combine. Spread them across the prepared baking tray and transfer to the oven and bake for 10 to 15 minutes, or until aromatic and the coconut is golden brown. Once done, remove from the oven and set aside to cool slightly, and remember to keep an eye on them as they can burn quickly.
Meanwhile, for the apple berry filling, melt your coconut oil in a frypan over medium heat. Add the diced green apple and pan fry, stirring and turning often to get good coverage, about 3 to 4 minutes. Once the apple has softened slightly, add in the berries and stir well to combine. Add the sweetener now too if using. Keep cooking, whilst stirring for 5 to 6 minutes until hot, any juices begun to thicken and reduce and everything is well combined.
Serve your ingredients layered in wide mouthed glass cups, bowls or ramequins. Start with a base of berries, with some crumble, then another layer of berries, then finally a topping of crumble. Enjoy warm immediately after making.