01 - Preheat the oven to 350°F. Grease a 9x5-inch loaf pan or line it with parchment paper.
02 - In a large bowl, whisk together the mashed bananas, eggs, melted butter, granulated sugar, brown sugar, and vanilla extract until smooth.
03 - In a separate bowl, whisk together the flour, baking soda, salt, cinnamon, and nutmeg.
04 - Gently fold the dry ingredients into the wet mixture using a spatula until just combined, avoiding overmixing.
05 - Fold in chopped nuts and/or chocolate chips if desired.
06 - Pour the batter into the prepared loaf pan and smooth the surface.
07 - Bake for 50 to 60 minutes, until a toothpick inserted into the center comes out clean or with a few moist crumbs.
08 - Allow the baked bread to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.