Peel, core, and chop the apples and add them to a mixing bowl along with the rest of the ingredients for the apple filling. Stir well until combined.
Preheat the oven to 375 degrees F.
Add the dry ingredients for the topping (gluten-free all-purpose flour, baking powder, sea salt, cinnamon, and coconut sugar) to a mixing bowl and stir well. Add the melted coconut oil and coconut milk and stir until a thick dough forms.
Transfer the apple mixture to a large 13” x 9” casserole dish and spread into an even layer. Drop dough over the apple filling. You can form biscuits, simply drop bits of dough over the apples or smooth the topping into an even layer. Whatever look you prefer!
Bake on the center rack of the preheated oven for 35 minutes. Lower the oven temperature to 350 degrees F and bake for another 10 minutes, until biscuits are golden-brown.
Remove cobbler from the oven. If desired, drizzle melted coconut oil or butter over the biscuits. Serve cobbler with vanilla ice cream.