My Sourdough Double Chocolate Banana Muffins are rich, fudgy, and impossibly moist, with deep cocoa flavor balanced by naturally sweet, super-ripe bananas. Made with sourdough discard, they bake up with a tender crumb, a gently domed top, and that bakery-style texture that makes them taste a little more special than your average banana muffin.
They're my favorite way to use up overripe bananas and leftover discard in one bowl, a lot like my banana blackberry muffins. If you want that same rich, chocolatey banana flavor without the discard, my chocolate chunk banana bread is the loaf version of this exact craving.
Quick Look: Sourdough Double Chocolate Banana Muffins
⏱️ Ready In: 40 minutes
🔥 Bake Time: 20 minutes
🍽️ Serves: 12 muffins
✨ Calories: 264 per muffin
🥄 Main Ingredients: sourdough discard, ripe bananas, cocoa powder, chocolate chips
🌿 Dietary: Vegetarian (dairy-free swap included)
💛 Why You'll Love It: one bowl of overripe bananas and discard turns into rich, fudgy, freezer-friendly chocolate muffins
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Why you'll love this recipe
They're incredibly soft and moist. The bananas and sourdough discard work together to keep the crumb tender, with just a hint of tang that keeps the chocolate from tasting flat. They're rich without being heavy. Blooming the cocoa in melted butter deepens the chocolate flavor, so they stay light and fluffy but still taste deeply indulgent. They're endlessly flexible. Keep them simple or load them with chocolate chips, just like I do in my sourdough double chocolate muffins, a fan favorite around here. They freeze beautifully. Bake a batch on the weekend and you've got grab-and-go breakfasts all week, the same trick I lean on for my sourdough discard banana muffins. They use up your discard. If you love baking this way, you'll want my sourdough pumpkin banana muffins and lighter sourdough discard blueberry muffins in your rotation too
Jump to:
- Quick Look: Sourdough Double Chocolate Banana Muffins
- Why you'll love this recipe
- Ingredients
- Easy Substitutions & Variations
- How to Make Sourdough Double Chocolate Banana Muffins
- Expert Tips
- What Makes This Recipe Special?
- FAQ
- Troubleshooting Guide
- Storage
- Other Sourdough Muffin Recipes to Consider
- Sourdough Double Chocolate Banana Muffins
Ingredients
- All-purpose flour gives these muffins their structure and tender crumb.
- Cocoa powder brings the deep chocolate flavor. Use unsweetened cocoa; Dutch-process gives a smoother, darker result while natural cocoa is a touch more acidic.
- Baking powder and baking soda work together for a good rise and soft texture. Salt sharpens the chocolate and balances the sweetness.
- Cinnamon and cardamom are kept light so they warm up the chocolate without taking it over.
- Ripe bananas are the natural sweetener and the source of all that moisture. The browner and spottier, the better.
- Sourdough discard adds a subtle tang and helps create that soft, tender crumb. 100g (about ⅓ cup) is perfect here.
- Unsalted butter carries the cocoa and adds richness.
- Vanilla extract rounds out the chocolate and banana.
- Egg binds everything together.
- Brown sugar sweetens and adds a soft, caramel note.
- Chocolate chips are optional but highly recommended for that double-chocolate, bakery-style finish.
Easy Substitutions & Variations
- Butter: Swap the melted butter for a neutral oil for an even softer, longer-lasting texture.
- Brown sugar: Use coconut sugar for a slightly deeper, caramel-like flavor.
- Chocolate chips: Chopped chocolate or dark chocolate chunks work just as well, and give you those pretty melty pools.
- Dairy-free: Use a plant-based butter or neutral oil and dairy-free chocolate chips to keep them fully dairy-free.
- Double chocolate: Press extra chips or chunks onto the tops before baking for a bakery look.
- Chocolate swirl: Swirl a spoonful of chocolate hazelnut spread into each muffin for a more dessert-like treat.
- Mini muffins: Bake as minis and reduce the time to 10–12 minutes.
How to Make Sourdough Double Chocolate Banana Muffins
Note: I bake by weight for accuracy. Cup measurements are approximate and may vary depending on how you scoop.
Step 1: Mix dry: Whisk together flour, cocoa, leavening, salt, and spices.
Step 2: Mix wet: In a separate bowl, mash the bananas, then whisk in sourdough discard, vanilla, egg, brown sugar, and the melted butter mixed with cocoa powder until smooth.
Step 3: Combine: Fold wet and dry together, then add chocolate chips.
Step 4: Bake: Fill liners and bake until set with soft, moist centers.
Weigh your ingredients! Using a kitchen scale ensures your measurements are accurate, which is key for getting consistent results in baking. It takes the guesswork out of measuring and helps your recipes turn out exactly as intended every time.
Expert Tips
- Bloom the cocoa first. Stirring cocoa into the warm melted butter before it hits the batter deepens the chocolate flavor and gives you that rich, bakery taste, no extra ingredients required.
- Use the spottiest bananas you've got. Very ripe bananas are sweeter and far more moist, which is exactly what carries these muffins.
- Don't overmix. Fold the wet and dry together just until you no longer see streaks of flour. Overmixing develops gluten and turns muffins dense and tough.
- Start hot, then drop the temperature. A short hot blast sets a tall, domed top, then lowering the heat lets the centers finish baking gently. Don't open the oven during the temperature change.
- Fill the liners high. Nearly full liners give you those big, bakery-style domes instead of flat tops.
What Makes This Recipe Special?
Most chocolate banana muffins ask you to choose between fudgy and fluffy. These give you both. The sourdough discard adds a quiet tang and an unmistakably tender crumb, the bananas keep everything moist for days, and the bloomed cocoa makes the chocolate taste like it came from a bakery case rather than a box.
It's a one-bowl-ish recipe built to use up two things most sourdough bakers always have too much of, overripe bananas and discard, and turn them into something that feels like a treat. If you're a chocolate-and-discard person, you'll see the same philosophy in my sourdough double chocolate muffins and rich fudgy sourdough discard brownies.
FAQ
Yes. Thaw them fully and drain off any excess liquid before mashing, then measure to weight so the batter isn't too wet.
Almost always overmixing. Fold the batter just until combined and you'll keep them light and tender.
The discard is what gives these their signature tang and tender crumb. If you don't bake sourdough, my chocolate chunk banana bread gives you the same chocolate-banana flavor without it.
No. Plain, unfed discard straight from the fridge is exactly what you want here.
You can scale the brown sugar down slightly, but keep in mind it adds moisture and softness as well as sweetness, so don't cut it too far.
Troubleshooting Guide
| Problem | Cause | Fix |
|---|---|---|
| Muffins are dense or gummy | Batter was overmixed | Fold only until the flour disappears, no more |
| Flat tops, no dome | Liners underfilled or oven not hot enough at the start | Fill nearly to the top and start with the hot blast before lowering the temperature |
| Muffins sank in the center | Oven door opened during baking or underbaked | Keep the door closed and bake until the centers spring back |
| Bitter or flat chocolate flavor | Cocoa not bloomed, or too much leavening | Bloom the cocoa in warm butter and measure baking soda carefully |
| Muffins stuck to the liners | Removed too soon, or low-fat batter | Let them cool a few minutes first; a small oil swap helps too |
Storage
Store muffins in an airtight container at room temperature for up to 3 days. For longer storage, refrigerate for up to 5 days, or freeze for up to 2 months.
To reheat, microwave for 10–15 seconds to bring back that soft, fresh-baked texture.
Other Sourdough Muffin Recipes to Consider
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Sourdough Double Chocolate Banana Muffins
Equipment
- Kitchen Scale
- 12-muffin pan
- mixing bowl or stand mixer
- Whisk or whisk attachment
- Rubber spatula
- 3 Tablespoon cookie scoop
Ingredients
- 240 g all-purpose flour
- 30 g cocoa powder
- 2 teaspoon baking powder
- 1 teaspoon baking soda
- ½ salt
- ½ teaspoon cinnamon
- ¼ teaspoon cardamom
- 340 g ripe bananas mashed (about 2-4 bananas depending on size)
- 100 g sourdough discard
- 85 g unsalted butter melted
- 10 g vanilla extract
- 50 g egg
- 147 g brown sugar
- 100-150 g chocolate chips
Instructions
- Prep the oven: Preheat to 350°F (175°C) and line a muffin pan with paper liners.
- Bloom the cocoa: In a bowl, whisk the cocoa powder into the warm melted butter until smooth and glossy.
- Mix dry ingredients: In a separate bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, nutmeg, and cardamom.
- Mix wet ingredients: In another bowl, mash the bananas, then whisk in the sourdough discard, brown sugar, egg, vanilla, and the cocoa-butter mixture until smooth.
- Combine batter: Add the dry ingredients to the wet ingredients and gently fold until just combined, then fold in chocolate chips if using.
- Fill and bake: Divide the batter evenly into muffin liners, filling about nearly to the top, and bake at 425F for 5 minutes, then lower the temperature to 350F and bake for another 15 minutes. Do not open the oven during this temperature change.This helps with rise, giving you tall, domed muffins.
- Cool: Let muffins cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.
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