• Pre-heat the oven to 180 degrees C / 350 degrees F

To prepare the filling

• Peel and chop the apples into 1 inch chunks
• Add to a large saucepan with the blackberries, water, maple syrup, ginger and cinnamon and cook for around 15 minutes until the apple has started to soften.
• Add the cornstarch and stir through until it has thickened.

To prepare the Crumb

• You can prepare the crumb while the apples and blackberry mixture are cooking.
• Grind the walnuts in a food processor or chop finely by hand. Add the walnuts to a mixing bowl with the oats.
• Melt the coconut oil in the microwave and mix in with the maple syrup
• Pour the coconut oil and maple syrup mixture over the oats and walnuts and mix well until combined.

Assembly and Cooking

• Add the apple and blackberry mixture to a baking dish, around 9 x 6 inches.
• Top with the oat-walnut crumble and spread across in an even layer.
• Bake in the oven for 25 minutes, until the oats are nice and golden.