Preheat the oven to 375 degrees F. Grease an 8-inch square baking dish with coconut oil.
In a large bowl, mix together the oats, baking powder, cinnamon, salt and pecans. Pour into the baking dish. Layer the berries and sliced bananas over the top of the oats, spreading evenly.
In a small bowl, whisk together the egg, maple syrup, vanilla extract and coconut milk. Mix until well combined. Slowly pour over the oats. Bake for 30 to 35 minutes, or until the top is golden brown. Allow to cool slightly before serving. Enjoy!
*You can substitute the coconut milk for cow's milk, almond milk, soy milk or any other milk.