Preheat oven to 375 degrees. Coat a baking dish that will easily fit 8 apple halves with cooking spray.
Melt the coconut oil in the microwave or in a saucepan, then set aside to let it slightly cool.
Cut the apples in half vertically, then remove the stems and seeds. Use a spoon to make a small well in the middle of the fruit halves. Place the apples in the baking dish.
Make the maple butter sauce in a saucepan: Combine the maple syrup, almond butter, cinnamon and vanilla over low heat. Stir continuously until it forms a smooth mixture.
Spoon half of the maple butter sauce into the apple wells. Set aside the rest.
In a mixing bowl, combine the oats, almond flour, coconut/brown sugar, cinnamon and salt. Add in the coconut oil and stir until evenly combined. Spoon the oat mixture into the apple halves.
Cover the baking dish with foil and bake for 20 minutes. Remove the foil, and bake for another 10 minutes, or until the apples are tender and gooey.
A few minutes before the apples are done cooking, warm the remaining almond butter mixture in the saucepan. Drizzle over the baked apples and enjoy!