Transform a campfire classic with these Peanut Butter S’mores Cookies! These soft and chewy cookies are sandwiched with rich chocolate ganache and toasted marshmallow fluff, making them perfect for any occasion. Whether you’re celebrating a birthday or just enjoying a cozy night in, these cookies will bring smiles all around. Their unique flavor profile combines the nostalgic taste of s’mores with the creamy goodness of peanut butter, creating a dessert that everyone will love.

Jump to:
- Why You’ll Love This Recipe
- Tools and Preparation
- Essential Tools and Equipment
- Importance of Each Tool
- Ingredients
- For the Cookies
- For the Ganache
- For the Marshmallow Fluff
- How to Make Peanut Butter S’mores Cookies
- Step 1: Preheat the Oven
- Step 2: Prepare Baking Sheets
- Step 3: Mix Dry Ingredients
- Step 4: Cream Butter and Sugars
- Step 5: Combine Wet and Dry Ingredients
- Step 6: Bake the Cookies
- Step 7: Prepare Chocolate Ganache
- Step 8: Make Marshmallow Fluff
- Step 9: Assemble Cookies
- How to Serve Peanut Butter S’mores Cookies
- With a Cold Glass of Milk
- Warmed with Ice Cream
- As a Party Platter
- In Gift Boxes
- With Coffee or Tea
- How to Perfect Peanut Butter S’mores Cookies
- Best Side Dishes for Peanut Butter S’mores Cookies
- Common Mistakes to Avoid
- Storage & Reheating Instructions
- Refrigerator Storage
- Freezing Peanut Butter S’mores Cookies
- Reheating Peanut Butter S’mores Cookies
- Frequently Asked Questions
- Can I use crunchy peanut butter for Peanut Butter S’mores Cookies?
- How do I make these cookies gluten-free?
- Can I add chocolate chips to the cookie dough?
- How do I store leftover marshmallow fluff?
- Final Thoughts
- 📖 Recipe Card
Why You’ll Love This Recipe
- Easy to Make: With simple steps, even beginner bakers can whip up these cookies without hassle.
- Rich Flavor: The combination of peanut butter, chocolate, and marshmallow creates an irresistible treat.
- Versatile Treat: Perfect for parties, gatherings, or just a sweet snack at home.
- Family-Friendly: Kids and adults alike will enjoy this delightful twist on traditional s’mores.
- Impressive Presentation: These cookies look stunning when served, making them great for special occasions.
Tools and Preparation
Before you start baking your Peanut Butter S’mores Cookies, gather some essential tools. Having the right equipment will make your baking experience smooth and enjoyable.
Essential Tools and Equipment
- Mixing bowls
- Measuring cups and spoons
- Baking sheets
- Parchment paper
- Electric mixer
Importance of Each Tool
- Mixing bowls: Essential for combining ingredients efficiently without mess.
- Electric mixer: Saves time and effort when creaming butter and sugars to achieve a light texture.
Ingredients
Transform a campfire classic with these Peanut Butter S’mores Cookies! Soft & chewy cookies sandwiched with a rich chocolate ganache and toasted marshmallow fluff.
For the Cookies
- 1 1/4 cups all-purpose flour
- 1/2 tsp baking soda
- 1/4 tsp sea salt
- 3/4 cup peanut butter (smooth, not natural)
- 1/2 cup unsalted butter (room temperature)
- 1/2 cup granulated sugar
- 1/2 cup light brown sugar (packed)
- 1 large egg (room temperature)
- 1 tsp vanilla extract
For the Ganache
- 4 oz semi-sweet chocolate chips
- 2 oz heavy cream
For the Marshmallow Fluff
- 1/3 cup water
- 3/4 cup granulated sugar
- 3/4 cup light corn syrup
- 3 large egg whites
- 1/2 tsp cream of tartar
- 1 tsp vanilla extract

How to Make Peanut Butter S’mores Cookies
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). This ensures that your cookies bake evenly.
Step 2: Prepare Baking Sheets
Line two baking sheets with parchment paper. This prevents the cookies from sticking and makes cleanup easy.
Step 3: Mix Dry Ingredients
In a mixing bowl, combine the following:
1. All-purpose flour
2. Baking soda
3. Sea salt
Whisk together until well blended.
Step 4: Cream Butter and Sugars
In another bowl, use an electric mixer to cream together:
– Unsalted butter
– Granulated sugar
– Light brown sugar
Beat until fluffy and light in color. Add in the egg and vanilla extract; mix well.
Step 5: Combine Wet and Dry Ingredients
Gradually add the dry mixture to the wet ingredients while mixing on low speed until just combined. Do not overmix.
Step 6: Bake the Cookies
Scoop tablespoon-sized amounts of dough onto prepared baking sheets. Bake for about 12 minutes or until edges are golden. Remove from oven and let cool on racks.
Step 7: Prepare Chocolate Ganache
In a small saucepan over low heat, combine semi-sweet chocolate chips and heavy cream. Stir until melted and smooth.
Step 8: Make Marshmallow Fluff
In a medium saucepan, mix water, granulated sugar, light corn syrup, egg whites, cream of tartar, and vanilla extract. Cook over medium heat while stirring until it reaches soft peaks. Remove from heat.
Step 9: Assemble Cookies
Spread chocolate ganache on one cookie half. Top with marshmallow fluff before placing another cookie half on top to create a sandwich.
Enjoy your delicious Peanut Butter S’mores Cookies!
How to Serve Peanut Butter S’mores Cookies
These delightful Peanut Butter S’mores Cookies are perfect for any occasion. Whether you’re hosting a party or enjoying a cozy night in, here are some serving suggestions to elevate your cookie experience.
With a Cold Glass of Milk
- Pair these cookies with a tall glass of cold milk for a classic combination that complements the richness of peanut butter and chocolate.
Warmed with Ice Cream
- Heat the cookies slightly in the microwave and serve them with a scoop of vanilla ice cream. The contrast between warm and cold creates a delightful treat.
As a Party Platter
- Arrange the cookies on a decorative platter for gatherings. They make an impressive dessert that guests will love, especially when combined with other sweets.
In Gift Boxes
- Package these cookies in decorative boxes as gifts. They make thoughtful treats for friends or family during holidays or special occasions.
With Coffee or Tea
- Serve these cookies alongside your favorite coffee or tea. The flavors meld beautifully, making for an enjoyable afternoon snack.
How to Perfect Peanut Butter S’mores Cookies
Creating the perfect Peanut Butter S’mores Cookies requires attention to detail. Here are some tips to ensure your cookies turn out delicious every time.
- Use Room Temperature Ingredients: Make sure your butter and eggs are at room temperature for better mixing and texture.
- Measure Flour Accurately: Spoon flour into your measuring cup and level it off for precise measurements, preventing dense cookies.
- Don’t Overbake: Keep an eye on the cookies while baking; they should look slightly underbaked when you take them out for a soft texture.
- Chill Dough: Consider chilling the dough before baking. This helps prevent spreading and keeps the cookies thick.
- Toast Marshmallow Fluff: For added flavor, lightly toast the marshmallow fluff before adding it to your cookie sandwich.

Best Side Dishes for Peanut Butter S’mores Cookies
While these Peanut Butter S’mores Cookies can stand alone, pairing them with sides can enhance your dessert experience. Here are some delicious side dishes to consider.
- Fruit Salad: A refreshing mix of seasonal fruits balances the sweetness of the cookies.
- Chocolate Fondue: Set up a chocolate fondue station where guests can dip pieces of cookie for an interactive treat.
- Yogurt Parfait: Layer yogurt, granola, and berries in cups for a light side that complements rich flavors.
- Cheese Board: Include creamy cheeses that contrast nicely with sweet desserts, providing variety to your spread.
- Nut Mix: Offer a blend of nuts as a crunchy contrast to the soft cookies; they add texture and flavor variety.
- Coffee Cake: A slice of coffee cake is perfect alongside these sweet treats for those who enjoy cake with their dessert.
Common Mistakes to Avoid
When making Peanut Butter S’mores Cookies, it’s easy to overlook a few key details. Here are common mistakes and how to avoid them.
- Using natural peanut butter: Natural peanut butter can alter the texture of the cookies. Stick with smooth, conventional peanut butter for consistent results.
- Skipping the room temperature ingredients: Ingredients like butter and eggs should be at room temperature. This helps create a smoother dough and better texture in your cookies.
- Overmixing the dough: Overmixing can lead to tough cookies. Mix just until combined for soft, chewy Peanut Butter S’mores Cookies.
- Not measuring accurately: Baking is a science, and incorrect measurements can ruin your cookies. Use a kitchen scale or measuring cups for precision.
- Ignoring chill time: Chilling the dough helps prevent spreading during baking. Plan ahead and refrigerate the dough for at least 30 minutes before baking.
Storage & Reheating Instructions
Refrigerator Storage
- Store cookies in an airtight container. This keeps them fresh.
- They will last up to 5 days in the refrigerator.
Freezing Peanut Butter S’mores Cookies
- Wrap each cookie individually in plastic wrap. This prevents freezer burn.
- Store in a freezer-safe bag or container for up to 3 months.
Reheating Peanut Butter S’mores Cookies
- Oven: Preheat your oven to 350°F (175°C). Place cookies on a baking sheet for about 5 minutes until warm.
- Microwave: Heat one cookie at a time on high for about 10-15 seconds. Check to avoid overheating.
- Stovetop: Use a non-stick skillet over low heat. Warm each cookie for about 1 minute on each side, watching closely.

Frequently Asked Questions
Can I use crunchy peanut butter for Peanut Butter S’mores Cookies?
Yes, you can use crunchy peanut butter if you prefer extra texture. Just keep in mind that it may change the consistency slightly.
How do I make these cookies gluten-free?
To make Peanut Butter S’mores Cookies gluten-free, substitute regular flour with a gluten-free all-purpose blend that contains xanthan gum.
Can I add chocolate chips to the cookie dough?
Absolutely! Adding chocolate chips will enhance the flavor and make your cookies even more decadent.
How do I store leftover marshmallow fluff?
Store any leftover marshmallow fluff in an airtight container at room temperature. It should stay good for several weeks.
Final Thoughts
Peanut Butter S’mores Cookies offer a delightful twist on a classic treat. Their soft and chewy texture, combined with rich chocolate ganache and toasted marshmallow fluff, makes them irresistible. Feel free to customize these cookies by adding nuts or different types of chocolate! Try this recipe today and enjoy a delicious dessert that’s perfect for any occasion.
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Peanut Butter S’mores Cookies
- Total Time: 32 minutes
- Yield: Approximately 24 cookies 1x
Description
Indulge in a delightful twist on a classic treat with these Peanut Butter S’mores Cookies. Soft and chewy, they feature a rich chocolate ganache and toasted marshmallow fluff sandwiched between two delectable cookies. Perfect for any occasion—be it birthdays, cozy nights in, or festive gatherings—these cookies combine the nostalgic flavor of s’mores with the creamy goodness of peanut butter. With an easy-to-follow recipe, even novice bakers can create this impressive dessert that will leave everyone smiling.
Ingredients
- 1 1/4 cups all-purpose flour
- 1/2 tsp baking soda
- 1/4 tsp sea salt
- 3/4 cup smooth peanut butter
- 1/2 cup unsalted butter
- 1/2 cup granulated sugar
- 1/2 cup light brown sugar (packed)
- 1 large egg
- 1 tsp vanilla extract
- 4 oz semi-sweet chocolate chips
- 2 oz heavy cream
- 1/3 cup water
- 3/4 cup granulated sugar
- 3/4 cup light corn syrup
- 3 large egg whites
- 1/2 tsp cream of tartar
- 1 tsp vanilla extract
Instructions
- Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.
- In one bowl, whisk together flour, baking soda, and sea salt. In another bowl, cream together unsalted butter, granulated sugar, and light brown sugar until fluffy. Mix in the egg and vanilla extract.
- Gradually add the dry ingredients to the wet mixture until just combined.
- Scoop tablespoon-sized amounts of dough onto prepared baking sheets and bake for 12 minutes or until edges are golden.
- Prepare the chocolate ganache by melting semi-sweet chocolate chips with heavy cream over low heat.
- Make marshmallow fluff by cooking water, granulated sugar, light corn syrup, egg whites, cream of tartar, and vanilla extract until soft peaks form.
- Assemble the cookies by spreading chocolate ganache on one cookie half, topping it with marshmallow fluff, then sandwiching with another cookie half.
- Prep Time: 20 minutes
- Cook Time: 12 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 210
- Sugar: 14g
- Sodium: 105mg
- Fat: 10g
- Saturated Fat: 4g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 28g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 25mg