Preheat oven to 400 degrees
In a large bowl mix together the oats, baking powder, brown sugar, chia seeds, cinnamon and salt. Mix and set aside.
In a small bowl combine the coconut milk, maple syrup, eggs and vanilla. Whisk to combine.
Pour the wet ingredients into the oat mixture and stir to combine evenly.
Grease a large pie or tart pan (or you could use small individual ramekins if you'd prefer, just decrease the cooking time)
Pour the oat mixture into the greased pan.
Place in the preheated oven and bake for about 25 minutes, or until the top of the oatmeal is nicely browned (you want the top to form a little "crust", but not over bake the interior).
Remove from oven and allow the baked oatmeal to cool for 5-10 minutes.
Top with berries of your choice and a sprinkle of powdered sugar.
Serve and enjoy