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Home / Recipes / Breakfast / Quick Bread / Chocolate Marble Banana Bread

Chocolate Marble Banana Bread

1 hr 20 mins
| 5 Comments |
5 from 1 vote
Jump to Recipe 02/27/21 | Updated: 02/28/21 | by Nora
Chocolate Marble Banana Bread Image Pin

I love a good banana bread, and this one is so special with the chocolate swirl throughout. It’s actually much easier to make than it looks!

six sliced of chocolate marble banana bread on marble surface

I am an absolute banana bread lover. I will buy very ripe bananas on purpose because I want to buy banana bread (or banana muffins) every week, otherwise I feel like I’m missing something 😂

Here, we’re adding a wonderful chocolate swirl throughout the bread – kind of like a marble pound cake with the added benefit of delicious banana flavor!

Ingredients you’ll need

Here is a visual overview of the ingredients in the recipe. Scroll down to the printable recipe card at the bottom of this post for quantities!

ingredients for chocolate marble banana bread with text labels
Ingredients for Chocolate Marble Banana Bread: Bananas, eggs, flour, cornstarch, oil, sugar vanilla, baking powder, salt, cocoa powder and milk.

Ingredient notes

  • Cocoa powder and milk: I always make the chocolate swirl with cocoa powder and a little milk because it’s easy and doesn’t require an extra dish. For a more chocolate-y swirl, melt ¼ cup chocolate chips and stir them into the batter in place of the cocoa powder and milk.
  • Bananas: The bananas need to be overripe for the bread to work and to turn out flavorful and sweet.
  • Oil: Feel free to use melted butter in place of the oil. I recommend a neutral-tasting cooking oil if you’re going with oil. I used canola.

How to make banana bread with a chocolate swirl

1. Start by combining the dry ingredients in a large mixing bowl.

2. Next, mash the bananas in a separate bowl or measuring jug.

photo collage to show how to combine wet and dry ingredient separately for banana bread

3. Add the remaining wet ingredients to the mashed bananas. Then, mix the wet ingredients until fully combined.

4. Now, pour the wet ingredients into the bowl with the dry ingredients. Fold them together using a rubber spatula just to combine. Do not overmix the batter, or your banana bread will come out dense and gummy!

photo collage to show how to assemble a chocolate marble banana bread

5. Add ⅔ of the batter to a lined loaf pan. Add the cocoa power and milk (OR melted chocolate chips) to the remaining batter in the bowl.

6. Pour the chocolate batter evenly over the plain batter in the pan. Using a fork, swirl the two together (please check out the video for my technique! It is so quick and simple and yields the most beautiful swirl!).

Then just bake the bread, allow it to cool a little and then enjoy warm!

overhead view of sliced banana bread

Recipe tips

  • Do not overmix the batter! It is very important to only combine the wet and the dry ingredients JUST until they’re combined. Lumps are perfectly fine. Do NOT use a whisk to combine the batter! Always use a rubber spatula or a wooden spoon.
  • Don’t over-marble and don’t under-marble. Marbling is best done with a fork spiraling through the batter, swirling darkness and light together. Make sure to check out my recipe video below to see my technique! But really, most of it is just a surprise once you finally slice into your bread 😉
  • Do not overbake the bread. The banana keeps the bread nice and moist, but overbaked banana bread is still dry.
slices of chocolate marble banana bread piled up

PS If you try this recipe, please leave a review in the comment section and add a star rating in the recipe card – I appreciate your feedback! Follow along on Pinterest, Facebook or Instagram.

Printable Recipe Card
frontal view of sliced banana marble bread
Pin Recipe

Chocolate Marble Banana Bread

A delicious and fluffy banana bread swirled all the way through with chocolate!
Recipe by Nora from Savory Nothings
made it? tap the stars to add your rating!
5 from 1 vote
Print Add Review

Recipe details

Prep 20 mins
Cook 1 hr
Total 1 hr 20 mins
Difficulty Easy
Servings 12 slices
Nutrition 238 kcal

Ingredients
 

Dry ingredients

  • 1 ¾ cups all-purpose flour
  • 2 tablespoons cornstarch
  • 1 teaspoon baking powder
  • ½ teaspoon salt

Wet ingredients

  • 1 ½ cups mashed overripe bananas about 4 medium-large
  • 2 large eggs
  • ⅔ cup granulated sugar
  • ½ cup oil OR melted butter
  • 1 teaspoon vanilla extract

For the chocolate batter

  • 3 tablespoons unsweetened cocoa powder yields mild chocolate taste; see notes to make more intense
  • 1 ½ tablespoons milk or more as needed

Instructions
 

  • Prep: Preheat oven to 350°F. Line a 8×4 inch loaf pan with baking parchment.
  • Combine dry ingredients: Combine flour, cornstarch, baking powder and salt in a large bowl. Set aside.
  • Combine wet ingredients: Mash bananas in a separate bowl or measuring jug. Add eggs, sugar, oil and vanilla. Mix until well combined.
  • Combine batter: Add wet to dry ingredients. Stir with a rubber spatula or wooden spoon JUST until combined. Do not overmix, lumps are fine.
  • Divide batter: Spread roughly ⅔ of the batter in the prepared pan. Stir cocoa powder and milk (OR melted chocolate chips) into remaining batter. Fold until chocolate is incorporated. Evenly pour over plain batter in pan.
  • Swirl batters and bake: Spiral a fork through batters to create a marble effect (please watch the video for clarification, this is so difficult to explain in words). Bake in hot oven for 50-60 minutes, or until a toothpick inserted comes out clean.
  • Cool: Once bread is baked, remove from oven and place on cooling rack in pan for 5 minutes. Lift bread out of pan and cool for 20-30 minutes on cooling rack before slicing to serve.
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Notes

Ingredient notes

  • Cocoa powder and milk: I always make the chocolate swirl with cocoa powder and a little milk because it’s easy and doesn’t require an extra dish. For a more chocolate-y swirl, melt ¼ cup chocolate chips and stir them into the batter in place of the cocoa powder and milk.
  • Bananas: The bananas need to be overripe for the bread to work and to turn out flavorful and sweet.
  • Oil: Feel free to use melted butter in place of the oil. I recommend a neutral-tasting cooking oil if you’re going with oil. I used canola.

Recipe tips

  • Do not overmix the batter! It is very important to only combine the wet and the dry ingredients JUST until they’re combined. Lumps are perfectly fine. Do NOT use a whisk to combine the batter! Always use a rubber spatula or a wooden spoon.
  • Don’t over-marble and don’t under-marble. Marbling is best done with a fork spiraling through the batter, swirling darkness and light together. Make sure to check out my recipe video below to see my technique! But really, most of it is just a surprise once you finally slice into your bread 😉
  • Do not overbake the bread. The banana keeps the bread nice and moist, but overbaked banana bread is still dry.

Nutrition

Serving: 1sliceCalories: 238kcalCarbohydrates: 34gProtein: 3gFat: 11gSaturated Fat: 1gTrans Fat: 1gCholesterol: 27mgSodium: 110mgPotassium: 186mgFiber: 2gSugar: 15gVitamin A: 61IUVitamin C: 2mgCalcium: 27mgIron: 1mg
Nutrition is an estimate.

More recipe information

Suitable for: Vegetarian
Course: Breakfast, Dessert
Cuisine: American

Recipe first published on 08/22/2014. Updated with better recipe, new photos, video and text on 02/27/2021.

More banana bread recipes

  • Cinnamon Swirl Banana Bread
  • Whole Wheat Chocolate Chip Banana Bread
  • Whole Wheat Cinnamon Crunch Banana Bread
  • The Best Healthy Banana Bread

You can also browse all of my quick bread recipes here, browse all of my banana recipes here, or browse all of my baking recipes here!

Nora Rusev from Savory Nothings
About Nora 
When I got married to my professional chef husband, I realized I had to step up my game in the kitchen. Now I share my favorite foolproof family recipes here on Savory Nothings: Chef-approved, kid-vetted and easy enough for everyday home cooks like you and me!   Learn more.

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Comments

  1. Nora says

    September 06, 2014 at 12:11 pm

    Hi Leilani, I’m not sure if it’s really called vanilla powder all over the world but what I’m using are entire ground vanilla beans! I’m sure you could substitute a couple drops of vanilla extract or just use the seeds from about 1/2 a pod!

    Reply
  2. Holly @ The Very Hungry Blonde says

    August 25, 2014 at 2:57 am

    Looks beautiful! And I love your plates! xD

    Reply
    • Nora says

      August 30, 2014 at 1:29 pm

      Thanks Holly! I was so excited when I found those plates, makes eating banana bread even better 😀

      Reply
  3. Chelsea @ A Duck's Oven says

    August 22, 2014 at 3:24 pm

    I’m totally with you on baking, my kitchen turns into a disaster! I love it, but cooking just a bit more 🙂 I love the sound of this banana bread! So much more fun than the classic!

    Reply
    • Nora says

      August 22, 2014 at 5:33 pm

      Thanks so much Chelsea! And I’m VERY glad I’m not the only one capable of making a total mess when baking 😀

      Reply

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Hi, I'm Nora! I wasn't always a good cook, but then I fell in love with a professional chef and learned my way around the kitchen. Now I share all my secrets to effortlessly great food here on my blog, bite-sized for home cooks just like me and you.

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