3largeoverripe bananasheavily spotted, about 1½ cups mashed
⅓cupunsalted buttermelted and slightly cooled
¾cupbrown sugarpacked
1largeeggroom temperature
1teaspoonvanilla extract
¼cupsour creamfull-fat
1teaspoonbaking soda
½teaspoonsalt
1½cupsall-purpose flour
Instructions
Preheat your oven to 350°F (175°C). Grease a 9x5-inch loaf pan with butter and lightly dust with flour, tapping out excess.
In a large bowl, mash the bananas until mostly smooth with just a few small chunks remaining for texture. You should have about 1½ cups of mashed banana.
Mix the melted butter into the mashed bananas, followed by the brown sugar, egg, vanilla extract, and sour cream. Stir until well combined.
In a separate bowl, whisk together the baking soda, salt, and flour. Add the dry ingredients to the banana mixture and gently fold together until just combined – don't overmix.
Pour the batter into your prepared loaf pan and smooth the top gently. Bake for 55-65 minutes, until a toothpick inserted in the center comes out with just a few moist crumbs.
Cool in the pan for 10 minutes, then turn out onto a wire rack to cool completely before slicing. For best flavor, wrap and let rest for several hours or overnight before serving.
Notes
Storage tip: Wrap tightly in plastic wrap and store at room temperature for up to 4 days, or freeze for up to 3 months. The bread actually becomes more moist and flavorful after a day. For extra richness, brush the warm loaf with melted butter and sprinkle with coarse sugar.