Weigh out the ingredients
You'll need flour, baking powder, baking soda, salt, cinnamon, nutmeg, sugar, brown sugar, yogurt, butter, vanilla, egg, and over-ripe bananas.
Combine the dry ingredients
In a medium bowl, combine the flour, baking powder, baking soda, cinnamon, nutmeg, and salt. Set aside.
In a small saucepan, add 155g (11 tbsp) of unsalted butter and place over medium heat. As the butter melts, stir it with a rubber spatula to encourage even cooking. The butter will be ready once it turns a dark golden color and the fat solids have darkened and settled at the bottom of the pan.
Brown the butter
To the brown butter, whisk in the brown sugar and granulated sugar.
Whisk together the butter & sugars
Then, vigorously whisk in the egg and vanilla until fully combined.
Whisk in the egg & vanilla
On a medium plate, mash the bananas, leaving them slightly chunky or smooth depending on texture preference.
Mash the bananas
Whisk the mashed bananas into the batter.
Mix in the bananas
Whisk in half of the dry ingredients until just combined.
Mix in half of the dry ingredients
Mix in the yogurt.
Mix in the wet ingredient
Lastly, mix in the remaining dry ingredients until fully combined.
Mix in the rest of the dry ingredients
Bake the banana bread for 60-75 minutes or until deeply golden and a toothpick inserted comes out clean. Remove from the pan and allow to cool completely before cutting.
Slice the loaf and enjoy!