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Chocolate marbled banana bread slices sitting on a wire rack featured photo.

Chocolate Marbled Banana Bread

Lisa Flinn
This Chocolate Marbled Banana Bread is just as beautiful as it is delicious! It’s extremely moist, packed with banana flavor, chocolatey and perfectly sweetened! 
5 from 4 votes
Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 20 minutes
Course Breakfast, Dessert, Snack
Cuisine American
Yields 8 Servings

Equipment

  • Digital Kitchen Scale
  • bowls
  • Measuring Cups/Spoons
  • Whisk/Silicone Spatula
  • 9x5 Inch (22x13 cm) Loaf Pan
  • Cooling Rack

INGREDIENTS

  • 1 ¼ Cups (283g) Mashed Bananas (2 large bananas or 3 small bananas)
  • 2 Cups (240g) All-Purpose Flour
  • 1 Teaspoon Baking Soda
  • ½ Teaspoon Salt
  • ¼ Cup (56g) Unsalted Butter melted and slightly cooled
  • 2 Tablespoons Neutral Oil (like avocado, canola or vegetable oil)
  • ½ Cup (100g) Granulated White Sugar
  • ¼ Cup (50g) Light Brown Sugar packed
  • 2 Teaspoons Vanilla Paste or Extract
  • 2 Whole Large Eggs room temp
  • ½ Cup (113g) Plain Full-Fat Greek Yogurt or Sour Cream room temp
  • 3 Ounces (85g) Chocolate Bar or Chocolate Chips melted

Instructions
 

  • Preheat Oven - Set a rack in the middle of the oven and preheat to 350º F (180º C).
  • Prep Pan - Butter and line a 9x5 inch (22x12 cm) loaf pan with parchment paper, making sure to leave a 1-inch (2.5 cm) overhang for easy removal.
  • Mash Bananas - In a medium bowl or plate, finely mash ripe bananas with a fork or potato masher and set aside.
    1 ¼ Cups (283g) Mashed Bananas (2 large bananas or 3 small bananas)
  • Combine Dry Ingredients - In a medium bowl, whisk together the flour, baking soda and salt.
    2 Cups (240g) All-Purpose Flour
    1 Teaspoon Baking Soda
    ½ Teaspoon Salt
  • Combine Wet Ingredients - In a large bowl, whisk together melted butter, oil, brown sugar, white sugar, and vanilla until well combined.
    ¼ Cup (56g) Unsalted Butter
    2 Tablespoons Neutral Oil (like avocado, canola or vegetable oil)
    ½ Cup (100g) Granulated White Sugar
    ¼ Cup (50g) Light Brown Sugar
    2 Teaspoons Vanilla Paste or Extract
  • Add eggs one at a time and mix well after each addition. Scrape down the sides and bottom of the bowl as needed.
    2 Whole Large Eggs
  • Add Greek yogurt and mashed bananas and mix until combined.
    ½ Cup (113g) Plain Full-Fat Greek Yogurt or Sour Cream
  • Combine Wet & Dry Ingredients - Gently fold in your dry ingredients with a spatula. Careful not to overmix. You just want the dry ingredients to absorb with the wet ingredients. Set aside.
  • Melt Chocolate - In a small bowl, melt your chocolate and mix until smooth. See note below.
    3 Ounces (85g) Chocolate Bar or Chocolate Chips
  • Make Chocolate Batter - Add 1 cup of batter into the melted chocolate and gently mix until combined. It's okay that the chocolate is warm.
  • Swirl - Alternate scooping the two batters into your prepared loaf pan. Then run a butter knife up and down and side to side a few times, swirling the batters together. Do not over swirl or the batters will get muddled together.
  • Bake - Bake for 55 to 65 minutes, or until an inserted toothpick in the center comes out clean. Mine took 60 minutes.
    After 30 minutes, loosely tent the top of the bread with foil to prevent the bread from getting too brown.
  • Cool - Let the banana bread cool in the pan and on a wire rack for 15 minutes before removing from the pan. Let it continue to completely cool on the wire rack before serving. Serve and enjoy!

Video

Notes

Melting Chocolate - Transfer finely chopped chocolate into a heatproof bowl, then place over a small pot of simmering water and heat until melted. Alternatively, you can melt chocolate in the microwave by heating in 20 second intervals (mixing in between) until smooth.
Keyword chocolate banana bread, chocolate marble banana bread, chocolate swirl banana bread, moist banana bread
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