Preheat the oven to 180℃ (356℉).
In a large bowl add the oats, maple syrup, cinnamon, ginger and vanilla extract. Stir thoroughly.
Spread the oats across a lined baking tray and place in the oven for 15 minutes, until slightly browned. (You may need to stir the oats once during cooking the time, to ensure they cook evenly.)
When the oats are cooked and have cooled, place them into a large bowl with the desiccated coconut, mixed chopped nuts, flaxseed and coconut sugar. Mix well.
You can now assemble your crumble! Pop your stewed fruit into an oven-proof dish and top with your crumble topping!
Bake at 150℃ (302℉) until heated through.