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A slice of snickerdoodle banana bread with a golden cinnamon sugar crust, sitting on a wooden table with breakfast nearby.
Summer Dempsey

Easy Snickerdoodle Banana Bread

This Easy Snickerdoodle Banana Bread is the best of both worlds—classic banana bread meets the cozy, cinnamon-sugar magic of a snickerdoodle cookie. The loaf bakes up soft, moist, and tender thanks to ripe bananas and sour cream, while the crackly cinnamon-sugar topping adds a warm, buttery crunch on top.
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Prep Time 15 minutes
Cook Time 55 minutes
Total Time 1 hour 10 minutes
Servings: 10
Course: Breakfast, Dessert
Cuisine: American
Calories: 291

Ingredients
  

Dry Ingredients
  • 1 ½ cups all-purpose flour
  • 1 teaspoon baking soda
  • ½ teaspoon baking powder
  • ½ teaspoon fine salt
  • 1 tablespoon ground cinnamon
  • ½ teaspoon nutmeg optional but adds warmth
Wet Ingredients
  • ½ cup unsalted butter melted and slightly cooled
  • ¾ cup brown sugar
  • ¼ cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 3 very ripe bananas mashed (about 1 ¼ cups)
  • ½ cup sour cream or full-fat Greek yogurt
Cinnamon-Sugar Topping (Snickerdoodle Style)
  • ¼ cup granulated sugar
  • 2 teaspoons cinnamon
  • Optional: 1 tablespoon melted butter for brushing the top before sprinkling sugar creates a crunchier crust

Equipment

  • Mixing bowls
  • Whisk

Method
 

  1. Preheat oven to 350°F. Grease a 9×5 loaf pan and line with parchment for easy lifting.
  2. In a medium bowl, whisk together: flour, baking soda, baking powder, salt, cinnamon and nutmeg(if using). Set aside.
  3. In a large bowl, whisk together: melted butter, brown sugar, granulated sugar. Add eggs and whisk until smooth. Mix in vanilla, mashed bananas, and sour cream.
  4. Pour dry ingredients into wet. Fold together gently just until no dry streaks remain. Do NOT overmix.
Make the Snickerdoodle Topping
  1. Stir sugar + cinnamon together.
  2. Pour batter into loaf pan.
  3. (If using melted butter, brush the loaf batter surface lightly so the cinnamon sugar sticks and crisps.)
  4. Sprinkle the cinnamon-sugar evenly over the top. Swirl the topping into the batter gently using a toothpick.
  5. Bake for 55–65 minutes, or until a toothpick inserted in the center comes out clean with only moist crumbs.
  6. Let the bread cool for 10 minutes in the pan, then transfer to a rack to cool completely.

Notes

     
  • Bananas matter: Use very ripe bananas with lots of brown spots. They add natural sweetness, moisture, and strong banana flavor that balances the cinnamon-sugar topping.
  • Don’t overmix: Once the dry ingredients hit the wet, fold gently and stop as soon as no dry streaks remain. Overmixing = dense bread.
  • Sour cream = moisture: Sour cream (or full-fat Greek yogurt) keeps the crumb tender and rich without making the loaf heavy.
  • Snickerdoodle topping tip: For an extra crisp, bakery-style crust, lightly brush the batter with melted butter before sprinkling on the cinnamon sugar.
  • Swirl lightly: A gentle swirl with a toothpick gives that classic snickerdoodle look without sinking the topping into the loaf.