Measure ¼ cup of coconut oil then melt in a microwave safe bowl until liquid (around 20 - 30 seconds). Allow to cool slightly before mixing with the other ingredients.
In a large bowl, whisk together yogurt, maple syrup, eggs, vanilla extract, and melted coconut oil until well combined
In a separate bowl, whisk together oat flour, coconut flour, cocoa powder, salt, baking soda, and baking powder
Add the dry ingredients to the wet, and use a rubber spatula to stir until just combined
Fold in the chocolate chips
Line a muffin tin with parchment paper muffin liners (these will ensure the muffins do not stick) or spray regular muffin liners with cooking spray
Distribute batter evenly into the 12 cups
Top each muffin with additional mini chocolate chips, if desired
Bake the gluten free chocolate muffins at 400 degrees for 15 - 18 minutes, until a toothpick inserted comes out clean