Preheat the oven to 400 degrees F and grease a baking dish with the coconut oil.
In a small saucepan over medium heat, combine the raisins, milk, sugar, cinnamon, and salt. Cook, stirring frequently, 10 minutes, then stir in half of the maple syrup
Place the apples in the baking dish and fill the cores with the raisin mixture. Bake 40 minutes or until the apples are fork-tender.