Try this Banana Bread Recipe.
Cooling the loaf for precisely 15 minutes in the pan prevents structural collapse before it transfers to a wire rack. Combining whole wheat flour with all-purpose flour requires careful mixing; whole wheat absorbs significantly more liquid and introduces heavier bran particles that can weigh down the crumb. Sifting the dry ingredients together ensures even distribution of the 1 teaspoon of baking soda and 2 teaspoons of baking powder, which drives the chemical leavening needed to lift dense fruit purees. Room temperature butter at 72 degrees Fahrenheit incorporates maximum air when beaten with brown sugar, creating tiny pockets that expand in the 350-degree oven heat.
Five overripe bananas supply substantial natural sugar and moisture, meaning skim milk should be added gradually to prevent a soggy batter. Substituting the butter with oil alters the final texture by making the crumb moister but removing the nutty dairy notes that brown butter solids provide.