Preheat oven to 325 degrees
Mix almond flour, coconut oil, cinnamon, and 1 egg together by hand in a medium sized bowl
Press mixture to form crust into bottom and sides of pie pan
Bake 10-15 minutes (remove the crust as it barely starts to brown)
Combine pumpkin, 3 eggs, stevia, pumpkin pie spice, and vanilla and mix using an immersion blender. If you don't have one of these, use a regular blender or food processor. It should be smooth and spreadable, but not really pourable
Add coconut milk if needed to thin slightly
Pour/smooth the filling over the crust
Bake for about an hour or until center is no longer jiggly. (Will set more as it cools)