Preheat the oven to 180C (fan). Place 8 dates in a bowl, cover with boiling water and soak for 10 minutes to soften. Drain and mash the dates with a fork. Finely chop the few remaining dates and place them in a large bowl. Add the mashed dates, oats, milk, cinnamon, egg, desiccated coconut, chia seeds and maple syrup. Mix thoroughly until well combined.