Preheat oven to 350°F (175°C) and lightly grease a baking dish.
In a bowl, toss apples with maple syrup, lemon juice, cinnamon, nutmeg, vanilla, and cornstarch.
Transfer the coated apples to the baking dish, spreading evenly.
In another bowl, combine oats, almond flour, coconut sugar, salt, and cinnamon.
Pour melted coconut oil over the mixture and stir until it resembles coarse crumbs.
Sprinkle the crisp topping evenly over the apples.
Bake for 35-40 minutes, or until the apples are bubbly and the topping is golden brown.
Let cool slightly before devouring.