Whisk together the first six ingredients in a large bowl: flour, sugar, cocoa powder, baking soda, salt, and baking powder.
In a medium bowl, whisk together banana, yogurt, oil, applesauce, and egg until blended.
Add to your flour mixture and stir just until moistened.
Fold in chocolate chips.
Grab a muffin pan fit for a dozen and line with paper or parchment muffin cups three-fourths full.
Bake on center rack until a toothpick inserted in center comes out clean, approx. 20-25 minutes.
Cool 5 minutes in pan, then transfer to a wire rack. Serve warm.
Notes
Extra muffins may be frozen and reheated for a rainy day treat or individually wrapped and stored at room temperature for a few days.Nutrition Facts below are estimated using an online recipe nutrition calculator. Adjust as needed and enjoy!