Preheat oven to 350 degrees.
Grease a 9x13 baking dish with non-stick cooking spray (I use a Misto).
Combine the oats, salt, and baking powder. Place half of the oats mixture in the pan and then top with half of the berries, followed by the remainder of the oats.
In a medium bowl, combine the eggs, milk, vanilla, stevia and melted coconut butter. Pour over the oats mixture, shaking the pan back and forth until the liquid settles.
Top with the remaining berries and bake for 30-40 minutes or until oats are tender and the mixture has set.
Remove from oven and serve warm with a splash of milk or cool completely and store in the refrigerator until ready to serve.