Position oven rack to the middle and pre-heat the oven to 350 F. Line a 12-cup muffin pan with liners and set aside.
Add all ingredients except chocolate chips to a blender. Blend until completely smooth, scraping down the sides of your blender as needed.
Stir in chocolate chips until evenly distributed.
Transfer batter to prepared muffin pan. Top each muffin with an extra sprinkle of chocolate chips if desired.
Bake for 18-22 minutes or until muffins are set, and a toothpick inserted into the center comes out mostly clean with just a few moist crumbs.
Immediately transfer to a wire rack to cool. Let them rest for at least 15-minutes before eating.
