Moist, nutty banana bread made extra rich with fragrant brown butter, ripe bananas, and a hint of cinnamon. Simple to make with bakery-style results every time.
Brown the butter: Add butter to a light-colored saucepan over medium heat. Cook, stirring often, until it foams, turns amber, and smells nutty, 5 to 7 minutes. Immediately scrape into a heatproof bowl and let cool 10 minutes.
Preheat oven to 350°F. Grease a 9x5-inch loaf pan and line with a parchment sling for easy removal.
Mash the bananas in a large bowl until mostly smooth with a few small lumps.
Whisk the browned butter, granulated sugar, and brown sugar into the mashed bananas until well combined.
Whisk in the eggs one at a time, then add vanilla until smooth and glossy.
Stir in the Greek yogurt until incorporated.
In a separate bowl, whisk together flour, baking soda, salt, and cinnamon.
Add dry ingredients to wet and fold gently with a spatula just until no dry streaks remain; do not overmix.
Fold in walnuts and chocolate chips, if using.
Transfer batter to the prepared pan and smooth the top.
Bake until the top is deep golden and a toothpick inserted in the center comes out with a few moist crumbs, 55 to 65 minutes. Tent loosely with foil if browning too quickly.
Cool in the pan for 15 minutes, then lift out using the parchment and cool completely on a rack before slicing.
Slice and serve. Store leftovers tightly wrapped at room temperature for up to 3 days or freeze up to 3 months.
Notes
For extra nutty flavor, cook the butter until deep amber but not burnt. Very ripe bananas (speckled or nearly black) give the best sweetness and moisture. Mix-ins like pecans, chopped dates, or toasted coconut work well too.