Preheat Oven:

Heat your oven to 350°F (175°C). Grease a 9x5-inch loaf pan or line it with parchment paper.

Mix Wet Ingredients:

In a large mixing bowl, whisk together the melted butter and brown sugar until smooth. Add the eggs and vanilla, then stir in the mashed bananas.

Add Dry Ingredients:

Sprinkle flour, baking soda, salt, and cinnamon over the banana mixture. Stir until just combined—don’t overmix. If using, fold in nuts at this point.

Bake:

Pour the batter into your prepared loaf pan and smooth the top. Bake for 55–65 minutes, or until a toothpick inserted in the center comes out clean. If the top browns too quickly, cover loosely with foil for the last 10–15 minutes.

Cool & Slice:

Let the bread cool in the pan for 10–15 minutes, then transfer to a wire rack to cool completely. Slice and enjoy!