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A whole golden brown loaf of super moist banana bread, freshly baked and sliced on an aged oak board, revealing its tender crumb.

Bake the Best 1-Bowl Banana Bread: My Simple Secret for Super Moist Loaves!

This simple, one-bowl recipe transforms overripe bananas into an incredibly moist, tender, and flavorful banana bread. The secret to its soft crumb is a generous amount of sour cream, balancing sweetness with a subtle tang. It's an easy-to-make, consistently delicious treat perfect for any baker.
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Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 40 minutes
Servings: 1 loaf
Ingredients Method Notes

Ingredients
  

  • 1.5 cups all-purpose flour
  • 1 tsp baking soda
  • 0.5 tsp salt
  • 1 tsp ground cinnamon
  • 0.5 cup unsalted butter room temperature
  • 0.75 cup firmly packed brown sugar
  • 2 large eggs room temperature
  • 0.5 cup sour cream room temperature, full-fat (plain full-fat yogurt works as substitute)
  • 2 cups ripe, spotty bananas mashed (from about 4 large)
  • 1 tsp vanilla extract
  • 0.75 cup chocolate chips optional, semi-sweet or dark
  • 0.75 cup chopped nuts optional (walnuts or pecans)

Method
 

  1. Preheat your oven to 350°F (175°C) and place the oven rack in the lower middle position. Grease an 8x5-inch loaf pan with butter or a non-stick spray. A little flour dusting helps too.
  2. In a large bowl, whisk together the all-purpose flour, baking soda, salt, and ground cinnamon. Make sure these dry ingredients are well combined.
  3. In the same bowl, add the room temperature unsalted butter and firmly packed brown sugar. Beat them together using an electric hand mixer or a stand mixer until the mixture is pale and creamy. This usually takes about two minutes.
  4. Beat in the eggs one at a time, ensuring each is fully incorporated before adding the next. Scrape down the sides of the bowl as needed to make sure everything mixes evenly.
  5. Next, mix in the room temperature sour cream, mashed ripe bananas, and vanilla extract. Beat on low speed until just combined. Be careful not to overmix at this stage.
  6. Gradually add the dry ingredients to the wet ingredients. Mix on the lowest speed until the flour streaks have almost disappeared, but do not overmix. A few small lumps are okay; overmixing develops gluten and can make the banana bread tough.
  7. If you're adding any optional mix-ins like chocolate chips or chopped nuts, gently fold them in now with a spatula. Don't use the mixer for this part.
  8. Pour the batter evenly into your prepared loaf pan. Spread it out gently with a spatula.
  9. Bake for 55-65 minutes, or until the top is golden brown and a wooden skewer or toothpick inserted into the center comes out clean. A few moist crumbs are fine, but no wet batter should remain. If the top browns too quickly, loosely tent the loaf with aluminum foil.
  10. Remove the pan from the oven and let the banana bread cool in the pan for about 15-20 minutes. Then, carefully invert it onto a wire rack to cool completely before slicing and serving. Enjoy your delicious banana bread!

Notes

For best results, always use very ripe bananas (lots of brown spots) for maximum sweetness and flavor. Avoid overmixing the batter once dry ingredients are added, as this can lead to a tough loaf; a few streaks of flour are acceptable. Ensure all cold ingredients (butter, eggs, sour cream) are at room temperature for proper emulsification and a lighter texture. For storage, wrap the cooled banana bread tightly in plastic wrap or foil at room temperature for 3-4 days. For longer storage, slice and freeze individual pieces for up to 3 months. Variations: Fold in 3/4 cup of semi-sweet or dark chocolate chips, or 3/4 cup of chopped nuts (walnuts/pecans, optionally toasted). Experiment with other spices like nutmeg or allspice, shredded coconut, or dried cranberries. Frozen bananas can be used; thaw completely and include their liquid. Substitutes for sour cream include plain full-fat Greek yogurt or buttermilk (use the same amount); a homemade buttermilk substitute can be made with milk and lemon juice/vinegar. If the banana bread sinks in the middle, it might be underbaked, contain too much leavening, or the oven door was opened too early/frequently during baking.