Preheat oven to 350° F and spray a 9×9 or similar baking dish with cooking spray
In a large bowl stir together the oats, cinnamon, baking powder, salt and coconut. In a separate bowl whisk together the milk, maple syrup, egg and vanilla
Pour the wet ingredients in with the dry and stir until combined. Add in the peaches and stir together. Pour the mixture into the prepared baking dish and top with peach slices and little coconut
Bake for 35-45 minutes or until the top is golden and the oatmeal is set. Let it rest for 5 minutes before serving