Dice the apples. Place the pan over medium-low heat. Add the coconut oil to the pan, then once the pan is well-heated, add the rest apple filling ingredients and stir occasionally until the apple chunks are soft. Transfer the apples into the baking dish and set aside.
Preheat the oven at 175 C / 350 F.
To make the crisp topping
In a bowl, mix the coconut oil, maple syrup, and vanilla extract first, then add the rest ingredients: oat flour, rolled oats, baking powder, sliced almonds, and salt. Mix to combine.
Pave the crisp mixture over the apple filling.
Bake at 175 C / 350 F for 25-30 minutes or until the crisp topping is golden brown. Serve warm.