Banana S’mores Muffins

Let’s Bake Some Sunshine & S’mores Magic!

Hey kitchen bestie! Harper here, waving my flour-dusted wooden spoon at you from my sunny little cooking nook. Ever have one of those mornings where you crave banana bread’s cozy hug but secretly dream of campfire s’mores? That’s exactly how these Banana S’mores Muffins were born – a happy accident during a rainy Sunday when my bananas were extra spotty and my nostalgia was cranked to eleven. Imagine fluffy banana muffins doing a conga line with toasted marshmallows, melty chocolate, and crunchy graham crackers. It’s like your favorite childhood memories decided to throw a party in your mouth! These aren’t just muffins; they’re edible joy bombs perfect for lazy brunches, lunchbox surprises, or “just because” moments. I promise they’re foolproof – even if you once set off a smoke alarm making toast (we’ve all been there!). So tie on that apron, grab those speckled bananas, and let’s turn ordinary ingredients into extraordinary magic. Ready? Let’s bake smiles!

Grandma’s Sunday Symphony & Sticky Fingers

Close your eyes. Smell that? It’s buttery graham crumbs and caramelizing sugar – the scent of my childhood Sundays. My grandma, a tiny woman with flour perpetually dusting her cheek, would corral us grandkids into her lemon-yellow kitchen. “Harper-girl,” she’d wink, “fetch the black bananas!” We’d mash them with giggly ferocity while she melted butter, her radio humming old jazz tunes. Her “Banana Surprise Muffins” (our code name for these s’mores stunners) were legendary. I’d always sneak extra chocolate chips into the batter, earning a playful swat with her oven mitt. The best part? The marshmallows would puff into golden clouds in the oven, and we’d race to claim the first muffin, burning our tongues in glorious impatience. That first bite – warm banana hugging molten chocolate, crispy graham giving way to sticky-sweet marshmallow – wasn’t just food. It was love, laughter, and the safe, syrupy feeling of belonging. Baking these now? It’s my edible time machine.

Your Flavor Orchestra: Ingredients & Swaps

  • ⅔ cup packed light brown sugar – Deep caramel notes! Swap with coconut sugar for less refined sweetness.
  • 2 tbsp unsalted butter, melted – Richness MVP! Vegan? Use melted coconut oil.
  • 1 large egg – Binder extraordinaire. Flax egg (1 tbsp ground flax + 3 tbsp water) works great.
  • 1 tsp vanilla extract – Flavor fairy dust! Always use pure vanilla for that “ooh” factor.
  • ⅔ cup mashed ripe banana (≈2 bananas) – BLACK SPOTS = SWEETNESS! No green bits – they’re flavor bullies.
  • ½ cup sour cream – Secret moisture hack! Plain yogurt or buttermilk also shine.
  • 2 cups all-purpose flour – Structure captain. For gluten-free, use 1:1 GF blend + ½ tsp xanthan gum.
  • 2 tsp baking powder + 1 tsp baking soda – Lift dream team! Check expiry dates – flat muffins = sad muffins.
  • ½ tsp salt – Flavor enhancer! Balances sweetness like a boss.
  • 1 tsp cinnamon – Warmth whisperer. Try a dash of nutmeg for depth.
  • ¾ cup graham cracker crumbs – Crunchy soul! Blitz 6 sheets in a baggie with a rolling pin.
  • ⅔ cup whole milk – Liquid harmony! Any milk works, but whole = extra tender crumb.
  • 1 cup miniature chocolate chips, divided – Melty pockets! Mini chips distribute better – but chop regular ones if needed.
  • 1 cup miniature marshmallow bits, divided – Gooey magic! Freeze marshmallows 10 mins before chopping to reduce stickiness.

Chef’s Whisper: Measure flour by spooning into cups & leveling – no packing! Over-measuring = dense muffins. 🥲

Let’s Get Mixing: Step-by-Step with Harper’s Hacks!

  1. Preheat & Prep: Crank that oven to 350°F (175°C)! Why? A hot start gives muffins their perfect dome. Line a muffin tin with paper liners or grease generously. Hack: Spritz liners with cooking spray – no sticking!
  2. Wet Team Unite: In a large bowl, whisk brown sugar and melted butter until it looks like sandy lava. Add the egg and vanilla – whisk until silky (1 minute). Fold in mashed banana and sour cream gently. Tip: Lumpy bananas = flavor pockets! Don’t over-mix.
  3. Dry Crew Assemble: In another bowl, whisk flour, baking powder, baking soda, salt, cinnamon, and graham crumbs. Chef’s Secret: Whisking = no bitter baking soda pockets!
  4. Marry the Mixtures: Add ⅓ dry ingredients to wet mix. Stir lightly. Pour in ½ the milk. Repeat: dry → milk → dry. Stir until *just* combined – a few flour streaks are FINE! Over-mixing = tough muffins (tragedy!).
  5. Fold in the Fun: Gently fold in ¾ cup chocolate chips and ¾ cup marshmallow bits. Hack: Toss extras in 1 tsp flour first – prevents sinkage!
  6. Scoop & Top: Spoon batter into cups (fill ¾ full!). Sprinkle remaining chips & marshmallows generously. Pro Move: Press toppings lightly so they adhere.
  7. Bake to Bliss: Bake 18-22 minutes. Rotate pan halfway! They’re done when tops spring back and a toothpick comes out clean (ignore melted chocolate!). Watch: Marshmallows brown FAST – tent with foil at 15 mins if needed!
  8. Cool (The Hardest Part!): Cool in pan 5 mins, then transfer to a rack. Resist! Hot muffins crumble. But… warm muffins with cold milk? *Chef’s kiss*.

The Science of Sweet: Why These Muffins Work

Ever wonder why these muffins turn out so perfectly fluffy with just the right amount of gooeyness? It’s not just luck—it’s science! Let’s break down the magic behind each ingredient and technique so you can bake with confidence.

Bananas: The Sweet Binder
Those overripe, black-speckled bananas aren’t just for show—they’re packed with natural sugars and moisture, reducing the need for excess butter or oil. The starches in bananas also break down as they ripen, making them easier to blend into the batter while adding a tender crumb. Pro tip: If your bananas aren’t ripe enough, roast them (peel on!) at 300°F for 15-20 minutes to caramelize their sugars.

Sour Cream: The Moisture Keeper
You might think yogurt or buttermilk could replace sour cream easily (and they can!), but sour cream’s higher fat content ensures these muffins stay ultra-moist without becoming dense. The acidity also reacts with the baking soda, giving them a better rise.

Graham Cracker Crumbs: The Texture Trick
Unlike traditional muffins, these have graham crumbs mixed right into the batter. Not only does this infuse every bite with that nostalgic s’mores flavor, but the crumbs also absorb some of the liquid, preventing a soggy texture. For extra crunch, sprinkle a few more on top before baking!

Marshmallows: The Gooey Secret
Mini marshmallows are key because they melt just enough to create sticky pockets without disappearing completely. If you use large marshmallows, they’ll liquefy and sink—hence why we reserve some for topping. Freezing them before chopping helps them hold their shape longer in the oven.

Baking Temperature: The Dome Maker
A hot oven (350°F) is crucial for that perfect muffin dome. The initial blast of heat causes the leavening agents (baking powder/soda) to react quickly, creating steam that lifts the batter. Rotating the pan halfway ensures even baking, while tenting with foil prevents over-browning.

The Golden Rule: Don’t Overmix!
Gluten development is the enemy of tender muffins. Stirring the batter until just combined keeps the gluten strands short, resulting in a light, airy texture. A few lumps? Totally fine—they’ll disappear during baking!


Troubleshooting: Fixes for Common Muffin Mishaps

Even the best bakers run into issues sometimes. Here’s how to rescue your muffins if things go sideways:

Problem: Flat, Dense Muffins

  • Cause: Expired baking powder/soda or overmixed batter.

  • Fix: Test your leavening agents by mixing ½ tsp with ¼ cup hot water—if it doesn’t bubble vigorously, replace them. Fold batter gently and stop as soon as the flour disappears.

Problem: Soggy Bottoms

  • Cause: Underbaking or excess moisture.

  • Fix: Bake an extra 2-3 minutes and use a toothpick to test the center (it should come out clean, ignoring melted chocolate). Cool muffins on a wire rack instead of leaving them in the pan.

Problem: Burnt Marshmallow Topping

  • Cause: Sugar in marshmallows caramelizes quickly.

  • Fix: Tent the muffins with foil after 15 minutes of baking, or add marshmallows in the last 5 minutes. Alternatively, broil for 30-60 seconds after baking for a toasted effect.

Problem: Chocolate Chips Sunk to the Bottom

  • Cause: Heavy add-ins + thin batter.

  • Fix: Toss chips in 1 tsp flour before folding in—this helps them “float.” Also, let the batter rest for 5 minutes before scooping to thicken slightly.

Problem: Muffins Stuck to Liners

  • Cause: Low-fat liners or insufficient greasing.

  • Fix: Use parchment liners or spritz regular ones with cooking spray. For a rustic look, skip liners and grease the tin generously with butter.

Problem: Dry Texture

  • Cause: Overbaking or too much flour.

  • Fix: Measure flour with the spoon-and-level method (no scooping!). Set a timer and check for doneness at 18 minutes—a toothpick should have moist crumbs, not bone-dry.


Beyond Breakfast: Creative Ways to Enjoy Banana S’mores Muffins

These muffins are versatile beyond your morning coffee! Here are fun ways to repurpose them:

1. Muffin Ice Cream Sandwiches
Slice a cooled muffin horizontally and sandwich a scoop of vanilla (or cinnamon!) ice cream in between. Roll the edges in extra graham crumbs and freeze for 1 hour.

2. Bread Pudding Remix
Cube stale muffins, layer in a baking dish, and pour a custard mix (2 eggs + 1 cup milk + 1 tbsp sugar + 1 tsp vanilla) over them. Bake at 350°F for 30 minutes for a s’mores-inspired bread pudding.

3. Gourmet French Toast
Dip muffin halves in an egg-milk mixture and pan-fry in butter. Top with whipped cream, chocolate drizzle, and toasted marshmallows.

4. Mini Trifles
Layer muffin crumbs, chocolate pudding, and whipped cream in glasses. Garnish with marshmallow fluff and a graham cracker piece.

5. Campfire Skillet Dip
Crumble muffins into a cast-iron skillet, top with extra chocolate chips and marshmallows, and broil until bubbly. Serve with fruit for dipping!

6. Muffin Milkshake
Blend a muffin with 1 cup milk, 1 scoop vanilla ice cream, and a pinch of cinnamon. Rim the glass with graham crumbs.

Serving Up the Smiles

Slide these golden beauties onto a rustic wooden board – that campfire vibe! For extra pizzazz, dust with powdered sugar or extra graham crumbs while warm. Serve ’em slightly warm (microwave 8 seconds!) so the chocolate stays gooey and marshmallows get stretchy. Pair with: a giant glass of cold milk for dunking, hot coffee for grown-up vibes, or vanilla ice cream for “dessert muffin” madness. Stack ’em high on a cake stand for brunch – watch eyes light up!

Make ’Em Your Own! Yummy Twists

  • Peanut Butter Passion: Swirl ¼ cup peanut butter into batter before topping.
  • Campfire Crunch: Add ½ cup crushed pretzels with dry ingredients.
  • Vegan Delight: Use flax egg, coconut oil, vegan yogurt, and dairy-free chocolate/marshmallows.
  • Double Chocolate: Swap ¼ cup flour for cocoa powder + extra chocolate chips.
  • Grown-Up S’more: Add 1 tbsp bourbon to wet ingredients + top with sea salt flakes.

Harper’s Heart-to-Heart

Fun fact: The first time I tested these, I used BIG marshmallows. They melted into gooey sinkholes (delicious but messy!). Mini bits are MVP. Over the years, I’ve learned: super-ripe bananas = sweeter muffins (freeze extras in peel when black!). And that “stir until just combined” rule? It’s sacred. I once over-mixed batter while telling a dramatic kitchen fire story (spoiler: it was smoke alarm level 2) – muffins turned into tasty hockey pucks. Live and learn! Now, these muffins are my go-to for new neighbor greetings or bad-day cures. They’re like edible hugs – share freely!

Your Questions, My Answers!

Q: My marshmallows vanished! Help!
A: They melt INTO the muffin (creating gooey pockets!) but topping with bits ensures visibility. Freezing them pre-chopping + pressing lightly into batter helps. If you crave toasted mallows, broil 60 seconds AFTER baking!

Q: Can I use frozen bananas?
A: Absolutely! Thaw completely, drain excess liquid, and mash. Pro tip: Freeze peeled bananas in chunks for smoother thawing.

Q: Why are my muffins dense/gummy?
A: Three culprits: 1) Over-mixing batter (stop at “just combined”!), 2) Old baking powder/soda (check expiry dates!), 3) Under-baking (toothpick test is key!).

Q: How long do they keep?
A: Store cooled muffins airtight at room temp 2 days, fridge 5 days. Freeze 3 months! Reheat frozen: 20 sec microwave or 10 mins oven at 300°F.

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Banana S’mores Muffins

Banana S’mores Muffins


  • Author: Harper Callahan
  • Total Time: 35 mins

Description

Craving the warm hug of banana bread with a gooey campfire twist? These Banana S’mores Muffins are fluffy, chocolatey, graham-crunchy treats packed with toasted marshmallow pockets. They’re the ultimate brunch hero, lunchbox surprise, or rainy-day pick-me-up. Easy, cozy, and nostalgia-approved—grab your ripe bananas and let’s bake edible hugs you’ll want on repeat!


Ingredients

Scale
  • ⅔ cup packed light brown sugar

  • 2 tbsp unsalted butter, melted (or coconut oil)

  • 1 large egg (or flax egg: 1 tbsp flax + 3 tbsp water)

  • 1 tsp vanilla extract

  • ⅔ cup mashed ripe banana (≈2 spotty bananas)

  • ½ cup sour cream (or plain yogurt/buttermilk)

  • 2 cups all-purpose flour (or 1:1 GF blend + ½ tsp xanthan gum)

  • 2 tsp baking powder + 1 tsp baking soda

  • ½ tsp salt

  • 1 tsp cinnamon

  • ¾ cup graham cracker crumbs (about 6 sheets)

  • ⅔ cup whole milk

  • 1 cup mini chocolate chips, divided

  • 1 cup mini marshmallow bits, divided


Instructions

1️⃣ Prep: Preheat oven to 350°F (175°C). Line muffin tin with paper liners and lightly spray for easy release.
2️⃣ Wet Mix: In a large bowl, whisk sugar + melted butter. Add egg + vanilla. Stir in mashed banana + sour cream.
3️⃣ Dry Mix: In another bowl, whisk flour, baking powder, baking soda, salt, cinnamon, graham crumbs.
4️⃣ Combine: Stir dry ingredients into wet in thirds, alternating with milk. Stop at just combined.
5️⃣ Fold: Gently fold in ¾ cup chocolate chips + ¾ cup marshmallows (tossed in a bit of flour).
6️⃣ Fill & Top: Spoon into muffin cups ¾ full. Sprinkle remaining chocolate + marshmallows on top, press lightly.
7️⃣ Bake: 18–22 mins, rotating halfway. Tent with foil if marshmallows brown too fast. Done when tops spring back + toothpick is clean (ignore melted chocolate).
8️⃣ Cool: Rest in tin 5 mins, then move to rack. Enjoy warm!

Notes

  • Freeze marshmallows 10 mins for easier chopping.

  • Measure flour by spooning, not scooping—no dense muffins!

  • Broil 60 sec after baking for extra toasty tops.

  • Prep Time: 15 mins
  • Cook Time: 20 mins

Nutrition

  • Calories: 260 kcal per serving
  • Fat: 10g
  • Carbohydrates: 38g
  • Protein: 4g

Nutritional Nibbles (Per Muffin)

Calories: 260 | Carbs: 38g | Sugar: 19g | Fat: 10g | Protein: 4g
Note: For lower sugar, reduce chocolate chips to ½ cup + use 85% dark chocolate!

Prep Time: 15 mins | Bake Time: 20 mins | Total Time: 35 mins | Makes: 12 muffins

Final Thoughts: More Than Just a Muffin

At first glance, these Banana S’mores Muffins might seem like a simple treat, but they’re really a celebration—of nostalgia, creativity, and the joy of sharing. Whether you’re baking them to brighten a friend’s day, reliving childhood campfire memories, or just treating yourself to a cozy moment, these muffins are little vessels of happiness.

The best part? They’re forgiving. Forget the fancy techniques or perfect presentation; what matters is the love you stir into the batter. So embrace the messy marshmallows, laugh at the occasional lopsided muffin, and savor every sticky-fingered bite. After all, the sweetest things in life are meant to be shared—preferably with a napkin nearby.

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