There’s nothing quite like the nostalgic joy of s’mores, but what if you could enjoy that gooey, chocolatey, peanut buttery magic anytime you want? The Peanut Butter S’mores Sandwich Cookies Recipe is exactly what your dessert game needs—combining soft peanut butter cookies loaded with melty chocolate chips and pillowy marshmallows, all sandwiched together for an irresistible treat. These cookies bring that campfire feeling straight to your kitchen, making them perfect for sharing with friends or savoring by yourself on a cozy afternoon.

Ingredients You’ll Need
Gathering simple, pantry-friendly ingredients is the first step to creating these delectable cookies. Each component is essential, from the creamy peanut butter that gives richness, to the mini marshmallows that provide that classic s’mores fluff. Every item plays a role in balancing taste, texture, and even the irresistible color contrast of the finished sandwich cookies.
- 1 cup all-purpose flour: The backbone of your cookie, providing structure and a tender crumb.
- 1/2 cup granulated sugar: Adds sweetness and helps create a slight crispness on the edges.
- 1/2 cup brown sugar: Brings depth and moisture, enhancing the cookie’s chewiness.
- 1/2 cup unsalted butter, softened: Gives richness and helps blend the flavors smoothly.
- 1/2 cup creamy peanut butter: Infuses nutty flavor and moist texture that’s signature to these cookies.
- 1 large egg, room temperature: Binds the dough while contributing to softness.
- 1 tsp vanilla extract: Elevates all flavors with a warm, fragrant touch.
- 1/2 tsp baking soda: Helps the cookies rise just enough for a perfect texture.
- 3/4 cup semi-sweet chocolate chips: Melts delightfully inside, giving that classic s’mores chocolate kick.
- 1 cup mini marshmallows: The gooey, toasty centerpiece that makes these cookies truly special.
How to Make Peanut Butter S’mores Sandwich Cookies Recipe
Step 1: Preheat and Prepare
Start by preheating your oven to 350°F (175°C) to ensure it’s hot and ready for baking. Line your baking sheets with parchment paper to prevent sticking and make cleanup a breeze. Preparation is key—this step sets you up for cookie success.
Step 2: Cream the Butters and Sugars
In a bowl, beat together the softened butter, granulated sugar, brown sugar, and creamy peanut butter until the mixture becomes light and fluffy. This aerates the dough, contributing to a soft yet slightly crisp texture in your cookies.
Step 3: Add Egg and Vanilla
Beat in the egg and vanilla extract until fully combined. The egg enriches the dough, while vanilla adds aromatic depth, bringing all the flavors into harmony.
Step 4: Mix Dry Ingredients
Whisk together the flour and baking soda in a separate bowl. Gradually add this dry mixture to the wet ingredients, mixing gently. Avoid overmixing to keep your cookies tender and chewy, rather than tough.
Step 5: Fold in Chocolate Chips
Carefully fold in the semi-sweet chocolate chips. These little gems will melt during baking, giving each bite bursts of rich, melty chocolate that perfectly complement the peanut butter.
Step 6: Shape and Bake
Scoop tablespoon-sized portions of dough onto your lined baking sheets, spacing them well apart because these cookies will spread as they bake. Bake for 10 to 12 minutes, until the edges are golden but the centers remain soft and inviting.
Step 7: Add Marshmallows and Finish Baking
Once out of the oven, quickly press mini marshmallows into the center of each cookie and pop them back in for 1 to 2 minutes. This allows the marshmallows to puff up, melt slightly, and capture that authentic s’mores gooeyness.
Step 8: Sandwich and Cool
Allow the cookies to cool just enough to handle, then gently sandwich them together pair by pair with the marshmallow sides facing inwards. The warmth of the cookies will melt the marshmallows and chocolate just enough to create a dreamy, handheld treat.
How to Serve Peanut Butter S’mores Sandwich Cookies Recipe

Garnishes
To jazz these cookies up for parties or gifting, sprinkle crushed graham crackers or a drizzle of melted chocolate over the top. A light dusting of powdered sugar can make them look extra inviting, adding a sweet, snowy touch.
Side Dishes
Pair your Peanut Butter S’mores Sandwich Cookies Recipe with simple sides like a cold glass of milk (regular, almond, or oat milk work wonderfully) or a scoop of vanilla ice cream for an indulgent twist. Fresh fruit such as strawberries or bananas can complement the richness nicely if you want a bit of balance.
Creative Ways to Present
Try stacking the sandwich cookies on a rustic wooden board interspersed with whole peanut butter cups or mini marshmallows for a playful s’mores platter. Alternatively, wrapping them individually in parchment and twine makes for charming, homemade gifts that friends will adore.
Make Ahead and Storage
Storing Leftovers
You can store these cookies in an airtight container at room temperature for up to 3 days without losing their soft, melty goodness. Just make sure the cookies have fully cooled before sealing them up to prevent sogginess.
Freezing
If you want to make a batch ahead of time, they freeze beautifully. Place the sandwich cookies in a single layer on a baking sheet to freeze individually, then transfer them to a freezer-safe container or bag. They’ll keep for up to 2 months and defrost wonderfully at room temperature.
Reheating
To revive the marshmallow’s gooey texture after chilling or freezing, pop the cookies in a 300°F (150°C) oven for about 5 minutes or microwave for 10 to 15 seconds. Watch closely to avoid over-melting or burning.
FAQs
Can I use chunky peanut butter instead of creamy?
Absolutely! Chunky peanut butter will add delightful little bits of crunch to the cookies, making the texture even more interesting. Just be sure to mix it well during the creaming step.
What if I don’t have mini marshmallows?
You can chop regular marshmallows into smaller pieces to mimic mini marshmallows, or use marshmallow fluff inside the cookies, though the texture will be different but still tasty.
Are these cookies gluten-free?
The recipe calls for all-purpose flour, but you can substitute a gluten-free flour blend one-to-one. Just check that your baking soda and other ingredients are gluten-free too.
Can I make these cookies vegan?
With some swaps like plant-based butter, a flax or chia egg, and dairy-free chocolate chips, you can certainly make a vegan version that’s just as delicious!
How do I prevent the marshmallows from melting off the cookies?
Press the marshmallows gently into the hot cookies and bake them briefly. This helps them adhere without sliding off, but avoid overbaking so they don’t completely melt away.
Final Thoughts
If you’re looking to delight your taste buds with something nostalgic yet novel, the Peanut Butter S’mores Sandwich Cookies Recipe is a must-try. These cookies pack all the best parts of a s’more into a handheld, shareable treat that’s as fun to make as it is to eat. So roll up your sleeves, preheat the oven, and get ready to fall in love with your new favorite cookie!
Print
Peanut Butter S’mores Sandwich Cookies Recipe
- Prep Time: 15 minutes
- Cook Time: 15 minutes
- Total Time: 30 minutes
- Yield: 12 servings
- Category: Dessert
- Method: Baking
- Cuisine: American
Description
Delight in these Peanut Butter S’mores Sandwich Cookies, combining the rich flavors of creamy peanut butter, semi-sweet chocolate chips, and gooey mini marshmallows baked into soft, golden cookies. Perfectly baked and pressed together for a nostalgic s’mores-inspired treat that’s easy to make and share.
Ingredients
Cookie Dough
- 1 cup all-purpose flour
- 1/2 cup granulated sugar
- 1/2 cup brown sugar
- 1/2 cup unsalted butter, softened
- 1/2 cup creamy peanut butter
- 1 large egg, room temperature
- 1 tsp vanilla extract
- 1/2 tsp baking soda
- 3/4 cup semi-sweet chocolate chips
Topping
- 1 cup mini marshmallows
Instructions
- Preheat oven: Preheat your oven to 350°F (175°C) to ensure it’s ready for baking the cookies.
- Cream the wet ingredients: In a mixing bowl, beat together the softened butter, granulated sugar, brown sugar, and creamy peanut butter until the mixture is light and fluffy, indicating proper aeration.
- Add egg and vanilla: Incorporate the large room-temperature egg and vanilla extract into the creamed mixture, mixing until fully combined for a smooth batter.
- Mix dry ingredients: In a separate bowl, whisk the all-purpose flour and baking soda together to combine evenly, then gradually add this mixture to the wet ingredients, mixing gently to avoid overworking the dough.
- Fold in chocolate chips: Carefully fold in the semi-sweet chocolate chips to distribute them evenly throughout the dough.
- Scoop dough: Using a tablespoon, drop portions of dough onto baking sheets lined with parchment paper, spacing them adequately to allow for spreading.
- Bake initial cookies: Bake the cookies in the preheated oven for 10-12 minutes, or until the edges turn golden while the centers remain soft and tender.
- Add marshmallows and finish baking: Remove the baking sheet, press mini marshmallows into the center of each cookie, then return to the oven for an additional 1-2 minutes until the marshmallows puff up.
- Cool and assemble: Let the cookies cool slightly on the baking sheet before sandwiching them together in pairs to create the s’mores-style sandwich cookies.
Notes
- Use room temperature egg for better incorporation and texture.
- Do not overmix the dough after adding flour to keep cookies tender.
- Press the marshmallows gently but firmly into the cookie centers to ensure they stay on during the second bake.
- If marshmallows brown too quickly, watch closely or reduce the oven heat slightly.
- These cookies are best enjoyed fresh but can be stored in an airtight container for up to 3 days.

