If you bake with sourdough regularly, you likely keep a jar of discard in the fridge waiting for a purpose. These Banana Chocolate Chip Sourdough Muffins are a favorite use for that discard. The starter brings extra moisture and a subtle tang that elevates ordinary banana muffins, while ripe bananas and melty chocolate chips keep every bite tender and satisfying.
This is a simple, dependable recipe that turns kitchen scraps into something irresistible. It’s a great zero-waste sourdough discard recipe you’ll return to often.
👉 Want more sourdough discard ideas? Try Sourdough Zucchini Muffins, Fudgy Sourdough Brownies, or Brown Butter Sourdough Chocolate Chip Cookies for other tasty ways to use your starter.
Recipe highlights
- Zero-waste recipe. Transform overripe bananas and sourdough discard into something delicious.
- Classic flavor pairing. Banana and chocolate is a timeless combination.
- Bakery-style texture. Soft, moist muffins studded with mini chocolate chips that feel bakery-made.
- Quick & easy. Mix, bake, and enjoy in under 30 minutes.
Recipe overview
⏱️ Prep: ~10 min • Bake: 15–20 min • Total: ~30 min
🍴 Yield: About 16 muffins
💪 Skill level: Beginner
How to make banana chocolate chip sourdough muffins
- Preheat & prep: Heat the oven to 350°F (175°C). Line two muffin tins with paper liners.
- Cream butter & sugar: Beat softened butter and brown sugar until smooth.
- Combine wet ingredients: Add eggs one at a time, then stir in mashed bananas. In a separate cup, whisk together stirred-down sourdough discard, buttermilk, and vanilla.
- Mix dry ingredients: Whisk flour, salt, baking powder, and baking soda together.
- Combine & fold: Add the dry mix to the banana mixture and stir until a few streaks of flour remain. Fold in the buttermilk mixture gently, then fold in the mini chocolate chips.
- Fill & bake: Divide batter among the lined muffin cups, filling them to the top for tall domes. Bake 15–18 minutes or until tops are lightly golden and spring back when touched.
- Cool slightly: Let muffins rest 5 minutes in the pan, then transfer to a wire rack. Serve warm or at room temperature.
Pro baking tips for perfect banana sourdough muffins
Use very ripe bananas. The riper the bananas, the more sweetness, moisture, and banana flavor they contribute.
Stir your discard before measuring so it’s fully combined and won’t separate into the batter.
Don’t over-mix after adding flour. Fold until dry streaks disappear; over-mixing leads to dense, tough muffins.
Choose mini chocolate chips. They distribute more evenly and give that bakery-style texture.
Fill muffin cups fully for tall, domed tops.
Check early. Ovens vary—start checking at 14 minutes if your oven runs hot.
Variations & substitutions
Optional add-ins: Replace mini chips with chopped dark chocolate, or fold in toasted walnuts or pecans for crunch.
Flour swap: Replace up to ½ cup of all-purpose flour with whole wheat for a nuttier profile.
Add spice: Stir in 1 teaspoon cinnamon for warm, cozy flavor.
Mini muffins: Use the same temperature and reduce baking time to 10–14 minutes.
No buttermilk? Mix 1 teaspoon lemon juice into ½ cup milk and let sit 2–3 minutes to make a quick buttermilk substitute.
Storage & make-ahead
Room temperature: Store cooled muffins in an airtight container at room temperature for up to 4 days. Reheat briefly in a 350°F oven wrapped loosely in foil for a fresh-baked feel.
Freezing: Once fully cooled, wrap muffins individually, seal in a freezer bag, and freeze up to 2 months. Thaw at room temperature.
Make-ahead batter: You can refrigerate the batter (covered) for up to 12 hours before scooping and baking. If you do, be sure your baking powder is double-acting so it retains leavening power.
If you try these Banana Chocolate Chip Sourdough Muffins, please leave a star rating and a comment below — I’d love to hear how they turn out or answer any questions. Thank you!
Banana Chocolate Chip Sourdough Muffins
Equipment
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Muffin tin & paper liners
Ingredients
- 4 ounces (½ cup) unsalted butter, soft
- 1 cup brown sugar
- 2 eggs
- 2 very ripe bananas, mashed
- 2 cups all purpose flour
- 1 teaspoon salt
- 2 teaspoons baking powder
- ½ teaspoon baking soda
- ½ cup buttermilk
- 1 teaspoon vanilla
- ½ cup sourdough discard, stirred down
- 1 cup mini chocolate chips
Instructions
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Prep: Preheat oven to 350° F and line muffin pans with paper liners.
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Cream butter & sugar: In a large bowl, cream 4 oz (½ cup) softened butter with 1 cup brown sugar until smooth, 1–2 minutes. Add 2 eggs one at a time, beating until combined. Stir in 2 mashed very ripe bananas.
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Combine dry ingredients: In a separate bowl whisk 2 cups all-purpose flour, 1 teaspoon salt, 2 teaspoons baking powder, and ½ teaspoon baking soda.
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Combine wet ingredients: Whisk ½ cup sourdough discard, ½ cup buttermilk, and 1 teaspoon vanilla together in a measuring cup.
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Mix: Add dry ingredients to the banana mixture and stir until a few streaks of flour remain. Fold in the buttermilk-discard mixture gently until nearly combined. Fold in 1 cup mini chocolate chips until evenly distributed.
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Bake: Scoop batter into lined muffin tins, filling to the top. Bake 15–18 minutes, until lightly golden and tops spring back. Cool a few minutes in the pan, then transfer to a rack to finish cooling.
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