Preheat oven to 350°F (175°C). Grease and flour a 9x5 inch loaf pan.
In a large bowl, mash the ripe bananas thoroughly.
3 ripe bananas bananas
Stir in the melted butter, granulated sugar, brown sugar, beaten egg, and vanilla extract until well combined.
3 ripe bananas bananas
In a separate bowl, whisk together the flour, baking soda, salt, and cinnamon.
3 ripe bananas bananas
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Do not overmix.
Pour the batter into the prepared loaf pan and spread evenly.
Bake for 50-60 minutes, or until a wooden skewer inserted into the center comes out clean.
Let the banana bread cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.
Notes
This banana bread is best served at room temperature. It can be stored in an airtight container at room temperature for up to 3 days, or refrigerated for up to a week.