01 - Preheat the oven to 350°F and line a 12-cup muffin tin with paper liners or grease lightly.
02 - In a large bowl, mash the bananas until smooth. Whisk in eggs, Greek yogurt, honey, oil, and vanilla until well combined.
03 - In a separate bowl, whisk together the flour, baking soda, baking powder, cinnamon, and salt.
04 - Gradually add the dry ingredients to the banana mixture and stir until just combined—do not overmix.
05 - Gently fold in the chopped nuts and optional chocolate chips.
06 - Divide batter evenly among the muffin cups, filling about 3/4 full.
07 - Bake for 18–22 minutes, or until a toothpick inserted into the center comes out clean.
08 - Cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.