If you’re looking for a delightful way to use up ripe bananas and your sourdough starter, these Soft Banana Sourdough Muffins are the perfect solution. Combining the natural sweetness of bananas with the tangy depth of sourdough, these muffins are soft, moist, and packed with flavor. Whether you’re a baking enthusiast or a beginner, this recipe is simple, and guaranteed to impress. Below, you’ll find a detailed guide, including ingredients, substitutions, equipment, storage tips, serving suggestions, and FAQs to make your baking experience seamless and enjoyable.
Table of Contents
What you will need ?
Here’s everything you’ll need to whip up a batch of these irresistible muffins. Each ingredient plays a crucial role in achieving that perfect texture and flavor.
🧈 ¼ cup butter, softened
- Use for: Provides richness and moisture, giving the muffins a tender crumb.
- Substitutions: You can substitute with ¼ cup of coconut oil or unsalted margarine for a dairy-free option. If using salted butter, reduce the added salt by a pinch.
🍚 ½ cup granulated sugar
- Use for: Adds sweetness and helps create a light, fluffy texture by aerating the batter.
- Substitutions: Swap with brown sugar for a deeper molasses flavor, or use honey or maple syrup (reduce by 1 tablespoon and add 1 tablespoon of flour to balance moisture).
🍌 4 medium bananas (1¾ cups mashed)
- Use for: Brings natural sweetness, moisture, and a rich banana flavor.
- Substitutions: If short on bananas, use 1 cup of unsweetened applesauce plus ½ cup of additional sugar. Overripe bananas work best for maximum flavor.
🥚 2 large eggs
- Use for: Acts as a binding agent and adds structure and richness.
- Substitutions: For an egg-free version, use 2 tablespoons of flaxseed meal mixed with 6 tablespoons of water (let sit for 5 minutes). This mimics the binding properties of eggs.
🍦 1 teaspoon vanilla extract
- Use for: Enhances overall flavor with a warm, aromatic note.
- Substitutions: Use almond extract for a nutty twist (use half the amount) or skip it if unavailable.
🥄 1 teaspoon baking soda
- Use for: Helps the muffins rise and become light and airy by reacting with the sourdough starter’s acidity.
- Substitutions: Substitute with 2 teaspoons of baking powder if baking soda is unavailable, but the texture may vary slightly.
🧂 ½ teaspoon salt
- Use for: Balances sweetness and enhances flavor.
- Substitutions: Use sea salt or kosher salt, but adjust to ¼ teaspoon if using table salt, which is finer.
🥣 ½ cup sourdough starter (113 grams)
- Use for: Adds a tangy flavor and helps with fermentation, making the muffins lighter.
- Substitutions: If you don’t have a starter, use ½ cup of plain yogurt mixed with ¼ teaspoon of yeast (let it sit for 30 minutes).
🌾 1¼ cups all-purpose flour
- Use for: Provides structure and texture to the muffins.
- Substitutions: Use whole wheat flour for a heartier texture (reduce to 1 cup and add 2 tablespoons of milk), or gluten-free 1:1 baking flour for a gluten-free option.

Equipment
To make these Soft Banana Sourdough Muffins, you’ll need the following tools:
- Muffin tin: Standard 12-cup tin for evenly sized muffins.
- Paper liners or nonstick spray: Prevents sticking and makes cleanup easy.
- Mixing bowls: One large bowl for wet ingredients and a smaller one for dry (if separating).
- Electric mixer or whisk: For creaming butter and sugar or mixing batter.
- Measuring cups and spoons: Ensures accuracy in ingredient proportions.
- Spatula: For folding in flour and scraping down bowl sides.
- Toothpick or cake tester: To check if muffins are fully baked.
- Wire rack: For cooling muffins evenly to prevent sogginess.
Step-by-Step Guide to Perfect Banana Sourdough Muffins
Follow these detailed, expanded steps for foolproof Soft Banana Sourdough Muffins. Each step includes tips and explanations to ensure success.
1️⃣ Preheat the oven and prepare the muffin tin
- Details: Set your oven to 350°F (175°C) and allow it to fully preheat (about 10-15 minutes). This ensures even baking. Line a 12-cup muffin tin with paper liners or lightly grease with nonstick spray or butter. If using liners, opt for parchment ones to prevent sticking.
- Tip: Place the tin in the oven during preheating to ensure it’s warm, which helps the muffins rise better.
2️⃣ Cream butter and sugar
- Details: In a large mixing bowl, add ¼ cup of softened butter and ½ cup of granulated sugar. Use an electric mixer or a sturdy whisk to beat them together until the mixture is light, fluffy, and pale yellow (about 2-3 minutes). This process incorporates air, which is key for a tender crumb.
- Tip: Ensure the butter is softened but not melted—leave it at room temperature for 30 minutes. If it’s too cold, microwave it for 5-10 seconds.
3️⃣ Mix in bananas, eggs, and vanilla
- Details: Peel and mash 4 medium bananas (about 1¾ cups) with a fork or potato masher until smooth but with some small chunks for texture. Add the mashed bananas, 2 large eggs, and 1 teaspoon of vanilla extract to the butter-sugar mixture. Mix on low speed or stir by hand until fully combined and no streaks remain. This step ensures even distribution of flavors.
- Tip: Crack eggs into a separate bowl first to check for shells. For extra banana flavor, use bananas that are heavily spotted or even black.
4️⃣ Incorporate baking soda, salt, and sourdough starter
- Details: Sprinkle in 1 teaspoon of baking soda, ½ teaspoon of salt, and ½ cup of sourdough starter. Mix gently with a spatula or on low speed until just combined. The sourdough starter may bubble slightly as it reacts with the baking soda, which is normal and helps with rising.
- Tip: If your starter is very active (doubled in size), use it straight from the counter. If it’s been in the fridge, let it sit at room temperature for an hour first.
5️⃣ Fold in the flour
- Details: Add 1¼ cups of all-purpose flour to the wet mixture. Use a spatula to fold the flour in gently, cutting through the batter with a folding motion. Stop as soon as no flour streaks remain—overmixing can make muffins dense. The batter should be thick but pourable.
- Tip: Sift the flour first to avoid clumps, and measure it by spooning it into the cup and leveling it off for accuracy.
6️⃣ Fill the muffin cups
- Details: Use a spoon, ice cream scoop, or piping bag to divide the batter evenly among the 12 muffin cups, filling each about ¾ full. This allows room for rising without overflowing. Tap the tin lightly on the counter to settle the batter and remove air bubbles.
- Tip: For uniform muffins, use a kitchen scale to ensure each cup has roughly the same amount of batter (about 50-60 grams).
7️⃣ Bake the muffins
- Details: Place the muffin tin in the preheated oven and bake for 18-22 minutes. Check for doneness by inserting a toothpick into the center of a muffin—if it comes out clean or with a few moist crumbs (not wet batter), they’re ready. The tops should be golden brown and spring back when lightly pressed.
- Tip: Rotate the tin halfway through baking for even cooking, especially if your oven has hot spots.
8️⃣ Cool the muffins
- Details: Remove the tin from the oven and let the muffins cool in the pan for 5 minutes. This helps them set and makes removal easier. After 5 minutes, use a butter knife or offset spatula to gently loosen the edges, then transfer the muffins to a wire rack to cool completely (about 15-20 minutes). Cooling prevents sogginess and allows flavors to settle.
- Tip: Place the wire rack over a baking sheet to catch crumbs and make cleanup easier.

How to Store & Reheating
Storage
- Room Temperature: Store muffins in an airtight container at room temperature for up to 2 days. Place a piece of bread in the container to absorb excess moisture and keep them fresh.
- Refrigerator: For longer storage, refrigerate in an airtight container for up to 5 days. Let them come to room temperature before serving for best flavor.
- Freezer: Freeze muffins in a freezer-safe bag or container for up to 3 months. Thaw overnight in the fridge or at room temperature for a few hours.
Reheating
- Microwave: Wrap a muffin in a paper towel and microwave for 15-20 seconds on high. This restores moisture without making them soggy.
- Oven: Preheat your oven to 300°F (150°C), wrap muffins in foil, and heat for 10 minutes. This method crisps the tops while keeping the inside soft.
What to Serve With
These Soft Banana Sourdough Muffins pair beautifully with a variety of accompaniments:
- Beverages: Enjoy with coffee, tea, or a glass of cold milk for a balanced nice breakfast or snack.
- Spreads: Serve with butter, cream cheese, or peanut butter for added richness.
- Fruits: Pair with fresh fruit like berries or sliced apples for a refreshing contrast.
- Breakfast Sides: Serve alongside yogurt parfaits, scrambled eggs, or bacon for a hearty brunch.

FAQs
How do I double banana sourdough muffins recipe?
Simply double all ingredients and use two muffin tins or bake in batches. Adjust baking time by 2-3 minutes if needed.
How do I prevent my muffins from sticking to the liners?
Use parchment liners or grease the liners lightly with nonstick spray. Cooling muffins completely before removing from liners also helps.
Why did my muffins turn out dense?
Density can result from overmixing the batter or using too much flour. Measure flour accurately and mix just until combined.
Can I add mix-ins like nuts or chocolate chips in banana muffins?
Absolutely! Fold in ½ cup of chopped walnuts, pecans, or chocolate chips after adding the flour. Distribute evenly for consistent flavor in every bite.
How do I know if my bananas are ripe enough?
Look for bananas with heavy spotting or black peels. They’re sweeter and easier to mash, perfect for baking.
Can I make these muffins without a sourdough starter?
Yes, substitute the ½ cup of sourdough starter with ½ cup of plain yogurt mixed with ¼ teaspoon of yeast. Let it sit for 30 minutes before using.

Soft Banana Sourdough Muffins Recipe: A Deliciously Moist Treat
- Total Time: 30 minutes
- Yield: 12 1x
Description
Ingredients
- ¼ cup butter, softened
- ½ cup granulated sugar
- 4 medium bananas (1¾ cups mashed)
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 teaspoon baking soda
- ½ teaspoon salt
- ½ cup sourdough starter (113 grams)
- 1¼ cups all-purpose flour
Instructions
- Preheat the oven to 350°F (175°C) and line a muffin tin with paper liners or grease it lightly.
- In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.
- Add the mashed bananas, eggs, and vanilla extract to the bowl and mix until well combined.
- Stir in the baking soda, salt, and sourdough starter, mixing gently to incorporate.
- Fold in the all-purpose flour just until no streaks remain-do not overmix.
- Divide the batter evenly among the muffin cups, filling each about ¾ full.
- Bake for 18-22 minutes, or until a toothpick inserted into the center comes out clean.
- Let the muffins cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.
- Prep Time: 10 minutes
- Cook Time: 20 minutes
Nutrition
- Serving Size: 1 muffin (approx. 60g)
- Calories: 165 kcal
- Sugar: 12g
- Sodium: 150mg
- Fat: 6g
- Saturated Fat: 3.5g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 25g
- Fiber: 1.5g
- Protein: 3g
- Cholesterol: 40mg
This recipe for Soft Banana Sourdough Muffins is not only delicious but also versatile and beginner-friendly. With these detailed instructions, substitutions, and tips, you’re well on your way to baking the perfect batch every time. Enjoy!