In a large bowl, whisk together the eggs, coconut oil, banana, maple syrup, and vanilla extract.
Add the oat flour, cocoa powder, baking soda, baking powder and salt. Stir gently until just incorporated.
Add in the chocolate chips and stir to combine.
Fill each muffin tin section with roughly ¼ cup batter, then bake for 15-20 minutes, or until the edges begin to pull away from the sides and a toothpick comes out clean.
Allow to cool in the pan for 5 minutes, then cool the rest on a cooling rack.
Notes
Most chocolate chips include dairy. Be sure to use dairy-free if that's important to you. I like Enjoy Life brand.
Skip the chocolate chips to keep this recipe completely refined sugar-free.