
Peanut Butter S’mores Sandwich Cookies bring together everything I love about classic s’mores and everything that makes peanut butter cookies irresistible. You get melty chocolate, fluffy toasted marshmallows, and a rich peanut butter flavor all nestled in a soft, chewy cookie sandwich—no campfire needed. These have quickly become a favorite for bake sales and family movie nights when everyone wants something celebratory and a little nostalgic.
The first time I made these for a rainy day snack, the whole batch disappeared before dinner. Now my friends request them at every party and I love watching everyone’s eyes light up when they take that first bite.
Ingredients
- Batch of soft peanut butter cookies: Using soft cookies ensures you get that perfect bite without crumbling Use homemade or your favorite store brand
- Creamy peanut butter: For spreading on the cookies and adding that unmistakable nutty richness Go for a natural variety with just peanuts and salt for the best flavor
- Semi sweet chocolate chips or chopped bar: This gives the classic s’mores chocolate melt Look for quality chocolate that melts smoothly
- Mini marshmallows: For that gooey center Fresh marshmallows toast better and are more pillowy
- Optional Crushed graham crackers: Sprinkling these on the edges gives a subtle crunch and an extra nod to the traditional campfire treat
Step by Step Instructions
- Bake the Cookies:
- Prepare your soft peanut butter cookie dough or use your favorite store bought variety Scoop into even portions about one tablespoon each and lightly flatten with your hand or spoon Bake until just golden around the edges then cool completely on a wire rack for cookies that are sturdy enough to sandwich
- Toast the Marshmallows:
- Set your oven broiler to high or use a kitchen torch for best results Place mini marshmallows on a parchment lined sheet and toast for one to two minutes Watch closely as they can brown very quickly Remove when they are golden and slightly puffed and let them cool just enough to handle
- Layer the Peanut Butter:
- Spread a generous layer of creamy peanut butter on the flat side of each cooled cookie This creates the magical base for your filling and keeps things from getting too sticky
- Add Marshmallows and Chocolate:
- Lay several toasted marshmallows onto the peanut butter layer then sprinkle chocolate chips or pour a drizzle of melted quality chocolate over the top The heat from the marshmallows starts to melt the chocolate for that true s’mores effect
- Sandwich and Finish:
- Top with a second cookie pressing gently so the fillings meet in the middle For extra crunch carefully roll the edges of the sandwich in crushed graham crackers if you like Let them rest on a tray until the chocolate is set or pop in the fridge for ten to fifteen minutes

My favorite part has to be the caramelized marshmallow corners that ooze out a little when you press the sandwich together. I still laugh when I remember my niece’s sticky marshmallow smile after she took her first giant bite—these cookies make sweet memories every time.
Storage Tips
Store leftover sandwich cookies in an airtight container at room temperature for up to three days The marshmallow centers may firm up after a day but you can warm them for a few seconds in the microwave to bring back that gooeyness. For longer storage, keep in the fridge and let come to room temperature before serving for the best texture.
Ingredient Substitutions
Swap out the peanut butter for almond butter or sunflower seed butter if you prefer. Dairy free chocolate and vegan marshmallows also work well so everyone can enjoy them. If you want a less sweet version try using bittersweet chocolate or add a sprinkle of flaky sea salt over the chocolate before sandwiching.
Serving Suggestions
Serve these cookies on a party platter alongside cold milk or rich hot cocoa for a cozy treat. For something really festive add a scoop of vanilla ice cream between the cookies and enjoy them as ice cream sandwiches. They also look beautiful stacked in gift boxes lined with parchment for a thoughtful thank you.

A Sweet New Tradition
Peanut Butter S’mores Sandwich Cookies blend two classic American treats for something everyone finds familiar yet exciting. These cookies offer the campfire s’mores nostalgia with the comfort of homemade peanut butter cookies. Most of all, they invite people of all ages to gather and share a treat that feels festive whether you are at a holiday table or just enjoying a weekend at home.
Frequently Asked Questions
- → How can I keep the cookies soft and chewy?
Choose a peanut butter cookie base known for a soft and chewy texture, and avoid overbaking. Let cookies cool on a wire rack for best results.
- → What’s the best way to toast marshmallows indoors?
Use your oven’s broiler or a kitchen torch to toast marshmallows–either method gives them a golden, gooey finish.
- → Can I use different nut butters or spreads?
Absolutely! Try almond butter, Nutella, or even caramel sauce to switch up the flavor profile.
- → How do I prevent chocolate from burning when melting?
Microwave chocolate chips in short intervals, stirring between each, or melt gently over a double boiler.
- → Do these cookies store well for gifting?
Yes, they keep well in an airtight container at room temperature for several days and are great as homemade gifts.
- → Is it possible to make ahead and assemble later?
Bake and store the cookies in advance, assembling with fresh marshmallow and chocolate just before serving for optimal gooeyness.