1. Preheat your oven to 350°F (175°C) and grease a 9×5-inch loaf pan.
2. In a bowl, whisk together the flour, baking soda, salt, and cinnamon. Set aside.
3. In a large mixing bowl, combine the melted butter and brown sugar, mixing until smooth. Stir in the eggs and vanilla extract.
4. Add the mashed bananas and yogurt to the wet ingredients, mixing until well incorporated.
5. Gradually add the dry ingredients to the wet mixture, stirring just until combined. Be careful not to overmix, as this can make the bread tough.
6. If using nuts, gently fold them into the batter.
7. Pour the batter into the prepared loaf pan, spreading it evenly. Optionally, sprinkle a little extra cinnamon or brown sugar on top for an extra caramelized crust.
8. Bake for 60-65 minutes, or until a toothpick inserted into the center comes out clean. Every oven is different, so keep an eye on it towards the end.
9. Let the bread cool in the pan for about 10 minutes before transferring it to a wire rack to cool completely.

One tip from my baking trials: if your bananas aren’t ripe enough, you can bake them in the oven at 300°F for about 15 minutes to bring out their sweetness.