Preheat the oven to 175C (350F)
Add the berries to your oven proof dish along with the cornflour, lemon juice and maple syrup (if using), mix until thoroughly combined
Make the crumble topping by adding the oats, ground almonds, crushed seeds, salt and cinnamon and stir.
Add in the melted coconut oil, almond butter and vanilla extract and mix well.
Sprinkle the crumble over the berry layer, then place in the oven to bake for 20-25 minutes, or until the crumble is golden brown and the fruit is bubbling. Serve with vegan yoghurt or ice cream. This will keep in the fridge, covered, for upto 3 days. Reheat in the microwave or you can put the whole thing in the oven to heat through (at a low temperature). Enjoy!