Sourdough S’mores Cookies with Marshmallows and Brown Butter are the ultimate campfire treat reinvented for your kitchen. Imagine gooey marshmallows, rich chocolate, and crunchy graham crackers all wrapped in a tangy sourdough dough enriched by nutty brown butter. These cookies capture that nostalgic s’mores flavor without the mess of skewers and smoke. One bite, and you’ll be hooked on their chewy centers and crispy edges.
I first tried Sourdough S’mores Cookies with Marshmallows and Brown Butter during a rainy camping trip alternative baking indoors felt like cheating summer. The sourdough discard adds a subtle tang that elevates the classic combo. TBH, they vanished faster than actual s’mores at a bonfire. Ready to bake your own batch?
7 Game-Changing Secrets to Perfect Sourdough S’mores Cookies with Marshmallows and Brown Butter
The magic starts with browning the butter, which transforms ordinary fat into nutty gold. This step infuses every bite with depth that plain butter can’t match. Sourdough discard brings fermentation’s gentle tang, balancing the sweetness perfectly. It’s like giving your cookies a cozy, artisanal hug.
Layering mix-ins matters too graham crumbs for crunch, mini marshmallows for ooze, and chocolate chips for melty bliss. Don’t skip chilling the dough; it prevents spreading into sad pancakes. For pro-level results, learn the art of browning butter from this brown butter guide on Wikipedia. These tweaks make Sourdough S’mores Cookies with Marshmallows and Brown Butter irresistible.
Ingredients
- 1 cup (2 sticks) unsalted butter, for browning
- ¾ cup granulated sugar
- ¾ cup packed brown sugar
- 2 egg yolks
- ¾ cup sourdough starter or discard (unfed is fine)
- 1 teaspoon vanilla extract
- 2½ cups all-purpose flour
- 1½ teaspoons baking soda
- 1 teaspoon salt
- 1½ cups semi-sweet chocolate chips (12 oz)
- 10 oz mini marshmallows
- 1 cup graham cracker crumbs or pieces
Instructions
- Brown the butter in a saucepan over medium heat, stirring until golden with brown flecks about 5-7 minutes. Pour into a mixing bowl and let cool slightly. Watch closely to avoid burning; that nutty aroma is your cue it’s ready.
- Mix in granulated sugar and brown sugar until combined. Add egg yolks, sourdough starter, and vanilla; beat until smooth. This prevents eggs from cooking in hot butter pro tip!
- Whisk flour, baking soda, and salt in a separate bowl. Fold dry ingredients into wet just until combined no overmixing, or cookies turn tough. Gently stir in chocolate chips, marshmallows, and graham crumbs.
- Preheat oven to 350°F. Scoop dough (2-tablespoon portions) onto parchment-lined sheets, spacing 2 inches apart. Chill dough 30 minutes for thick cookies.
- Bake 8-10 minutes until edges are golden but centers soft. Cool on racks. They firm up as they cool, revealing gooey marshmallow surprises.
Pro Storage Tips for Sourdough S’mores Cookies
Store cooled Sourdough S’mores Cookies with Marshmallows and Brown Butter in an airtight container at room temp for up to 3 days. The marshmallows keep them soft and chewy. For more ideas, check out our guide on 10-Min Sourdough Skillet Cookie. For longer storage, freeze dough balls and bake fresh add 1-2 extra minutes.
Reheating hack: Microwave for 10 seconds or warm in a 300°F oven for crisp edges. Avoid sogginess by layering parchment between layers. These stay delicious all week!
5 Incredible Benefits of Baking Sourdough S’mores Cookies with Marshmallows and Brown Butter
- Nutty brown butter boosts flavor complexity, mimicking gourmet desserts with everyday ingredients.
- Sourdough discard reduces waste while adding tangy depth perfect for home bakers.
- Gooey marshmallows and chocolate deliver instant nostalgia, ideal for parties or cozy nights.
- Customizable for dietary tweaks, like gluten-free flour swaps.
- Healthier twist: sourdough aids digestion per Healthline’s sourdough benefits article.
These perks make Sourdough S’mores Cookies with Marshmallows and Brown Butter a smart, fun bake. Real families rave about the crowd-pleasing results.
5 Common Mistakes to Dodge When Baking Sourdough S’mores Cookies
- Overbrowning butter leads to bitter cookies. Stop at amber flecks.
- Skipping the chill: Dough spreads thin without it. Patience pays off.
- Overmixing batter: Tough texture ruins chewiness. Mix minimally.
- Baking too long: Aim for soft centers; they set post-oven.
- Forgetting parchment: Marshmallows stick disastrously otherwise. FYI, it’s a cleanup nightmare!
Delicious Variations and Swaps for Sourdough S’mores Cookies
Swap semi-sweet chips for dark chocolate in Sourdough S’mores Cookies with Marshmallows and Brown Butter for less sugar. Use rye flour for ½ cup to amp nuttiness.
Vegan twist: aquafaba for egg yolks, plant-based butter. Add sea salt flakes pre-bake for gourmet flair. Gluten-free? For more ideas, check out our guide on Gluten-Free Sourdough Bread. Bob’s Red Mill 1:1 blend works seamlessly. Endless fun!
Frequently Asked Questions
Find answers to common questions
Sourdough S’mores Cookies with Marshmallows and Brown Butter
Ingredients
- 1 cup (2 sticks) unsalted butter, for browning
- ¾ cup granulated sugar
- ¾ cup packed brown sugar
- 2 egg yolks
- ¾ cup sourdough starter or discard (unfed is fine)
- 1 teaspoon vanilla extract
- 2½ cups all-purpose flour
- 1½ teaspoons baking soda
- 1 teaspoon salt
- 1½ cups semi-sweet chocolate chips (12 oz)
- 10 oz mini marshmallows
- 1 cup graham cracker crumbs or pieces
Instructions
- Brown the butter in a saucepan over medium heat, stirring until golden with brown flecks about 5-7 minutes. Pour into a mixing bowl and let cool slightly. Watch closely to avoid burning; that nutty aroma is your cue it’s ready.
- Mix in granulated sugar and brown sugar until combined. Add egg yolks, sourdough starter, and vanilla; beat until smooth. This prevents eggs from cooking in hot butter pro tip!
- Whisk flour, baking soda, and salt in a separate bowl. Fold dry ingredients into wet just until combined no overmixing, or cookies turn tough. Gently stir in chocolate chips, marshmallows, and graham crumbs.
- Preheat oven to 350°F. Scoop dough (2-tablespoon portions) onto parchment-lined sheets, spacing 2 inches apart. Chill dough 30 minutes for thick cookies.
- Bake 8-10 minutes until edges are golden but centers soft. Cool on racks. They firm up as they cool, revealing gooey marshmallow surprises.
Recipe from
Your Next Bake: Final Thoughts on Sourdough S’mores Cookies
Sourdough S’mores Cookies with Marshmallows and Brown Butter deserve a spot in your rotation they blend comfort and innovation flawlessly. Bake a batch this weekend and watch smiles spread. For more ideas, check out our guide on Sourdough Discard Banana Bread. Share your tweaks in comments!
Explore more sourdough magic with King Arthur Baking’s sourdough baking guide. Happy baking what’s your favorite cookie twist?
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