If you love the comforting flavor of homemade banana muffins and the nostalgic taste of classic s’mores, these Banana S’mores Muffins are the perfect treat for your kitchen. Packed with ripe bananas, crunchy graham cracker crumbs, melty chocolate chips, and gooey marshmallow bits, these bakery-style muffins are soft, fluffy, and bursting with irresistible flavor in every bite.
Perfect for breakfast, brunch, lunchboxes, or an afternoon snack, these easy Banana S’mores Muffins come together in less than 40 minutes. They’re a fun twist on traditional banana muffins, combining the sweetness of bananas with the rich chocolate and toasted marshmallow flavors everyone loves.
Why You’ll Love This Recipe
- Soft, moist muffins with classic s’mores flavor.
- A delicious way to use up overripe bananas.
- Ready in just 36 minutes from start to finish.
- Perfect for breakfast, snacks, or dessert.
- Kid-friendly, freezer-friendly, and easy to make.
Ingredients
Wet Ingredients
- ⅔ cup packed light brown sugar – Adds sweetness and a hint of caramel flavor.
- ¼ cup unsalted butter, melted – Creates a rich, tender crumb.
- 1 large egg – Binds the ingredients while adding structure.
- 1 teaspoon vanilla extract – Enhances the sweet flavors.
- ⅔ cup mashed ripe banana (about 2 medium bananas) – Adds natural sweetness, moisture, and banana flavor.
- ½ cup sour cream – Keeps the muffins incredibly soft and moist.
- ⅔ cup whole milk – Creates a smooth, well-balanced batter.
Dry Ingredients
- 2 cups all-purpose flour – Forms the base of the muffins.
- 2 teaspoons baking powder – Helps create a light, fluffy texture.
- 1 teaspoon baking soda – Works with the sour cream for extra lift.
- ½ teaspoon salt – Balances the sweetness.
- 1 teaspoon ground cinnamon – Adds warm, cozy spice.
- 1 cup graham cracker crumbs – Brings the signature s’mores flavor and texture.
Mix-Ins
- 1 cup miniature chocolate chips, divided – Adds pockets of melted chocolate throughout.
- 1¼ cups miniature marshmallow bits, divided – Creates sweet, gooey bites reminiscent of campfire s’mores.
- Extra graham cracker crumbs (optional) – Sprinkle on top for added crunch and flavor.
How to Make Banana S’mores Muffins
Prepare the Oven
Preheat your oven to 400°F (200°C).
Line a muffin pan with cupcake liners and lightly spray each liner with nonstick baking spray. This helps prevent the muffins from sticking after baking.
Mix the Wet Ingredients
In a large mixing bowl, whisk together the melted butter and brown sugar until smooth.
Add the egg, vanilla extract, mashed banana, and sour cream. Mix until creamy and fully combined.
Combine the Dry Ingredients
In a separate bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, and graham cracker crumbs.
Mixing the dry ingredients first ensures the leavening agents are evenly distributed.
Make the Batter
Gradually add the dry ingredients to the wet ingredients, alternating with the milk.
Mix gently until just combined. Avoid overmixing, as this can make the muffins dense instead of light and fluffy.
Fold in the Mix-Ins
Using a spatula, gently fold in ¾ cup of the chocolate chips and 1 cup of the marshmallow bits.
Stir just enough to evenly distribute them throughout the batter.
Fill the Muffin Pan
Divide the batter evenly among the prepared muffin cups, filling each about three-quarters full.
Sprinkle the tops with the remaining chocolate chips, marshmallow bits, and extra graham cracker crumbs if desired.
Bake
Bake for 15 to 16 minutes, or until the tops are lightly golden and a toothpick inserted into the center comes out clean or with a few moist crumbs.
Allow the muffins to rest in the pan for about 2 minutes before transferring them to a wire rack to cool completely.

Tips for Success
- Use very ripe bananas for the sweetest flavor and moistest texture.
- Spray cupcake liners with nonstick spray to prevent sticking.
- Do not overmix the batter; mix only until the flour disappears.
- Sprinkle extra chocolate chips and marshmallows on top before baking for a bakery-style appearance.
- Watch the muffins closely during the last few minutes of baking to avoid overbaking.
- Let the muffins cool completely before storing to prevent excess moisture.
Equipment Needed
- Standard muffin pan
- Cupcake liners
- Large mixing bowl
- Medium mixing bowl
- Whisk
- Rubber spatula
- Measuring cups and spoons
- Cooling rack
- Ice cream scoop or cookie scoop (optional for even portions)
Recipe Variations
Peanut Butter Banana S’mores Muffins
Add ½ cup peanut butter chips or swirl peanut butter into the batter for extra richness.
Double Chocolate Version
Replace a few tablespoons of flour with cocoa powder and use dark chocolate chips for a rich chocolate twist.
Banana Nut S’mores Muffins
Fold in chopped pecans or walnuts for added crunch and nutty flavor.
Mini Banana S’mores Muffins
Bake the batter in a mini muffin pan for bite-sized treats. Reduce the baking time to approximately 10–12 minutes.
Banana S’mores Bread
Pour the batter into a greased 9×5-inch loaf pan and bake at 350°F (175°C) for about 60 minutes for a delicious quick bread.
Serving Suggestions
These homemade Banana S’mores Muffins are delicious served:
- Warm with melted butter
- Alongside fresh fruit
- With a hot cup of coffee or tea
- As part of a weekend brunch spread
- With hot chocolate for an extra indulgent treat
- Lightly toasted for a crisp exterior and gooey center
For an extra-special presentation, drizzle melted chocolate over the cooled muffins and sprinkle with crushed graham crackers.
Frequently Asked Questions
Can I make Banana S’mores Muffins ahead of time?
Yes. These muffins stay fresh for several days and are perfect for meal prep or grab-and-go breakfasts.
How should I store them?
Store the muffins in an airtight container at room temperature for up to 3 days or refrigerate for up to 5 days.
Can I freeze them?
Absolutely. Freeze cooled muffins in a freezer-safe container for up to 3 months. Thaw at room temperature or warm them briefly in the microwave.
Can I use regular marshmallows?
Mini marshmallows can be substituted, but marshmallow bits hold their shape better during baking.
Can I substitute Greek yogurt for sour cream?
Yes. Plain Greek yogurt is an excellent substitute and provides a similar texture and moisture.
Why are my muffins sticking to the liners?
Because the recipe contains relatively little butter, the liners can stick. Spraying the liners with nonstick baking spray or baking directly in a greased muffin pan helps prevent this.
Final Thoughts
These Banana S’mores Muffins bring together everything you love about homemade banana bread and classic campfire s’mores in one irresistible treat. They’re soft, fluffy, packed with chocolate and marshmallows, and finished with the unmistakable crunch of graham crackers for a dessert-inspired breakfast everyone will love.
Whether you’re baking for your family, preparing snacks for the week, or looking for a fun recipe to share with friends, these easy Banana S’mores Muffins are guaranteed to be a hit. Bake a batch today, enjoy them warm from the oven, and don’t forget to share your experience in the comments—we’d love to hear how they turned out!
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Banana S’mores Muffins
Description
These easy Banana S’mores Muffins are loaded with graham cracker crumbs, chocolate chips, and marshmallows. They’re soft, fluffy, and packed with classic s’mores flavor in every bite.
Ingredients
- 2/3 cup packed light brown sugar
- 1/4 cup unsalted butter, melted
- 1 large egg
- 1 teaspoon vanilla extract
- 2/3 cup mashed ripe banana (about 2 medium bananas)
- 1/2 cup sour cream
- 2 cups all-purpose flour (240 g)
- 2 teaspoons baking powder
- 1 teaspoon baking soda
- 1/2 teaspoon table salt
- 1 teaspoon ground cinnamon
- 1 cup graham cracker crumbs, plus extra for topping
- 2/3 cup whole milk
- 1 cup miniature chocolate chips, divided
- 1 1/4 cups miniature marshmallow bits, divided
Instructions
- Preheat the oven to 400°F (200°C). Line a muffin pan with 16 paper liners and lightly spray them with nonstick baking spray, or grease the muffin pan well.
- In a large bowl, mix together the melted butter and brown sugar.
- Add the egg, vanilla extract, mashed banana, and sour cream. Mix until smooth and creamy.
- In a separate bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, and graham cracker crumbs.
- Add the dry ingredients to the wet ingredients alternately with the milk, mixing just until combined. Do not overmix.
- Fold in 3/4 cup of the chocolate chips and 1 cup of the marshmallow bits.
- Divide the batter evenly among the prepared muffin cups.
- Sprinkle the tops with the remaining chocolate chips, remaining marshmallow bits, and extra graham cracker crumbs if desired.
- Bake for 15–16 minutes, or until a toothpick inserted into the center comes out clean.
- Let the muffins cool in the pan for 2 minutes, then transfer them to a wire rack to cool completely.
- Store the cooled muffins in an airtight container.
Notes
Because these muffins contain very little butter, they may stick to paper liners. Spraying the liners with nonstick baking spray or baking directly in a well-greased muffin pan helps prevent sticking. The batter can also be baked in a greased 9×5-inch loaf pan at 350°F for about 60 minutes.