How do you combine indulgence and wholesome ingredients in one treat? These Chocolate Swirl Banana Muffins are the answer. If I’m choosing a muffin from now on, it will be these. They are incredibly soft, moist and fluffy — genuinely hard to resist. They keep their moisture for days and freeze very well, making them perfect for meal prep or grab-and-go breakfasts.
STEP BY STEP INSTRUCTIONS
These muffins rely on three whole bananas and only four tablespoons (56 g) of butter. Bananas are naturally effective at keeping baked goods tender because their starches, sugars and soluble fibers retain moisture and provide structure, so you don’t need a lot of fat to achieve a moist result.
I use a mix of granulated sugar and coconut sugar to give the batter a deeper, caramel-like note, but you can swap brown sugar if you prefer (see the FAQ for weight-based substitution guidance).
- STEP 1). Combine dry ingredients. Whisk together the flour, baking powder, baking soda and salt in a medium bowl.
- STEP 2). Combine wet ingredients. Place mashed bananas in a large bowl (or mash directly in the bowl, but weigh 360 g of banana flesh to be precise). Add both sugars and whisk until glossy. Whisk in the eggs, cooled melted butter and vanilla until combined.
- STEP 3). Add dry ingredients. Add the dry mixture all at once and fold gently until just combined — avoid over-mixing to keep the muffins tender.
- STEP 4). Make the chocolate swirl. Combine chopped bittersweet chocolate and cream in a small bowl and heat until the cream is hot. Stir until smooth and the chocolate melts. Stir in 1/4 cup of the banana batter and mix vigorously until the swirl is thick and uniform; it may separate briefly but will tighten as you stir.
- STEP 5). BAKE. Divide the batter evenly between 12 muffin cups. Spoon about 1 teaspoon of the fudge mixture into the center of each muffin and swirl it through with the blunt side of a knife, lifting batter up and around to tuck the swirl in. Top with a few large chocolate chunks if desired. Bake 18–20 minutes, then transfer to a wire rack to cool. They are delightful warm.
RECIPE FAQ
Can I use brown sugar to make these muffins?
Yes. If substituting brown sugar for coconut sugar, replace by weight rather than volume. Coconut sugar is lighter per cup than brown sugar, so use 65 g of brown sugar in place of 65 g coconut sugar (the recipe lists the coconut sugar amount by weight).
Can I freeze chocolate banana muffins?
Absolutely. These freeze very well. Wrap each muffin individually, freeze until solid, then transfer to a zip-top bag or airtight container. Thaw at room temperature or warm briefly in the oven or microwave.
EXPERT BAKING TIPS FOR CHOCOLATE SWIRL BANANA MUFFINS
- Don’t use over-ripe bananas. Use ripe bananas with brown spots rather than black, extremely over-ripe fruit. Over-ripe bananas can develop a fermented flavor and lose structural starch, which affects texture and flavor balance.
- Measure the flour accurately. Too much flour results in dense, doughy muffins and can mask the clean banana flavor. Using ripe (not over-ripe) bananas helps provide structure so you can get away with slightly less flour.
- Combine sugars with eggs and mashed bananas so the sugar begins to dissolve and blend, which helps produce a moist, evenly textured muffin.
- Do not over-mix the batter once the dry ingredients are added; over-mixing develops gluten and yields a tougher crumb.
- Add extra chocolate if you want—there’s never too much chocolate!
To create the fudge swirl, make a simple ganache from chopped bittersweet chocolate and heavy cream, then whisk a portion of the banana batter into it so the swirl is thick enough to hold shape when swirled into each muffin cup. The result is a rich, fudgy chocolate ribbon through a tender banana muffin.
These muffins are reliably delicious and simple to make. I hope you bake a batch soon and enjoy them warm with a cup of coffee or tea.
Moist Chocolate Swirl Banana Muffins
Christina Marsigliese
Pin Recipe
Ingredients
Muffin batter:
- 1 ½ cups 215g all-purpose flour
- 1 ½ teaspoon baking powder
- ½ teaspoon baking soda
- ½ teaspoon salt
- 1 ½ cups 355ml mashed bananas (from about 3 large bananas)
- ½ cup 100g granulated sugar
- ½ cup 65g coconut sugar or brown sugar (see post for substitution)
- 2 large eggs at room temperature
- ¼ cup 56g unsalted butter, melted
- 1 teaspoon 5ml pure vanilla extract
For the swirl:
- ½ cup 85g bittersweet chocolate, chopped
- 3 tablespoon 45ml 35% whipping cream
- dark chocolate chunks for topping
Instructions
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Preheat oven to 350°F (175°C). Line a standard 12-cup muffin pan with paper liners.
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Whisk together the flour, baking powder, baking soda and salt in a medium bowl.
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In a large mixing bowl, combine the mashed bananas and both sugars and whisk until glossy. Whisk in the eggs, cooled melted butter and vanilla. Add the dry ingredients all at once and fold gently until just combined.
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For the swirl, combine chopped chocolate and cream in a small bowl and heat until the cream is hot. Stir until smooth and melted. Stir in 1/4 cup of the banana batter and whisk vigorously until thick and uniform.
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Divide batter evenly among the 12 muffin cups. Spoon about 1 teaspoon of the fudge mixture into the center of each and swirl with the blunt side of a knife. Top with chocolate chunks if using and bake 18–20 minutes. Transfer to a wire rack to cool and serve warm or at room temperature.