Preheat the oven to 350°F.
In a medium bowl, combine the coconut sugar and almond flour.
Add the oats and chopped pecans or walnuts and stir together.
Add the solid coconut oil and mix until the topping is crumbly and evenly combined.
In a large bowl, combine the sliced apples, maple syrup, lemon juice, arrowroot powder, cinnamon, nutmeg, and sea salt.
Toss until the apples are evenly coated.
Transfer the apple mixture to a baking dish and spread it into an even layer.
Sprinkle the topping evenly over the apples.
Bake for 40 to 50 minutes, until the apples are tender and bubbling and the topping is golden brown.
Let the crisp rest for 10 to 15 minutes before serving