Preheat the oven to 350°F and grease a loaf pan or line it with parchment paper.
In a large bowl, whisk together the mashed bananas, eggs, yogurt, honey, and milk.
Add the chocolate peanut butter powder and mix well.
Stir in the flour, baking soda, baking powder, cinnamon, and salt until just combined.
Fold in the mini chocolate chips.
Pour the batter into the prepared pan and sprinkle more chocolate chips on top if desired.
Bake for 50–60 minutes or until a toothpick inserted into the center comes out clean.
Let cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.