Preheat the oven to 350 degrees.
In a medium bowl, mix the apple slices with the coconut sugar, cinnamon, and vanilla extract until all the slices are well coated.
Pour the apple mixture into a shallow baking pan and set aside.
In a bowl, combine the almond flour, cinnamon, chopped pecans, and salt.
To the dry crumble ingredients, add the maple syrup, vanilla, and coconut oil. This mixture should be moist yet crumbly. If too dry, add a bit more coconut oil.
Top the apples with the crumble ingredients until the apples are mostly covered.
Bake in the preheated over for 45 minutes or until the top of the crumble is golden. Let cool and enjoy!