Preheat your oven to 350°F (175°C) and grease or line a 9x5-inch loaf pan.

Mash ripe bananas in a bowl until mostly smooth with a few small lumps remaining.

To the mashed bananas, stir in melted butter, brown sugar, eggs, Greek yogurt, and vanilla extract until smooth.

In a separate bowl, whisk together all-purpose flour, baking soda, salt, and cinnamon.

Gently fold the dry mixture into the wet ingredients until just combined.

Fold in your chosen mix-ins, such as chocolate chips or nuts.

Pour the batter into the prepared loaf pan and bake for 55-65 minutes.

Let the banana bread cool in the pan for about 10 minutes before transferring to a wire rack.