Preheat oven to 375 degrees F.
In a medium sized mixing bowl beat the eggs, pumpkin, sugar and vanilla together.
Add the dry ingredients and stir until well combined.
Add the melted coconut oil slowly as you stir it in.
Gently fold in chocolate chips if adding.
Put in unbleached parchment paper muffin liners or reusable liners. Distribute evenly among 12. Bake for 20 minutes at 375 degrees, or until muffins are firm to the touch and slightly browned.