Ultimate Peanut Butter S’mores Sandwich Cookies (Gooey, Chocolatey & Completely Irresistible!)

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By Gianna Poulef

Peanut Butter S’mores Sandwich Cookies

Oh friend… these cookies are OUT OF CONTROL

Imagine soft peanut butter cookies wrapped around gooey marshmallow fluff and melted chocolate like the dreamiest campfire s’more—but somehow even better.

These Peanut Butter S’mores Sandwich Cookies are rich, chewy, creamy, and dangerously addictive. The peanut butter cookies stay soft and tender while the filling turns into pure melty dessert magic.

Honestly? One bite tastes like childhood nostalgia upgraded into bakery-level indulgence

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Overview of Recipe Content

These Peanut Butter S’mores Sandwich Cookies combine classic peanut butter cookies with gooey s’mores filling for the ultimate dessert mashup.

Why you’ll love them:

  • Soft peanut butter cookies
  • Gooey marshmallow center
  • Melted chocolate in every bite
  • Bakery-style sandwich cookies
  • Perfect for parties and holidays

What they taste like:

Like warm peanut butter cookies stuffed with campfire s’mores and melted chocolate bars

Health note:

This recipe is unapologetically indulgent… and absolutely worth it.

Ingredients

This Now, Make It Later!

For the Peanut Butter Cookies

  • 1½ cups creamy peanut butter
  • ½ cup (1 stick) unsalted butter, softened
  • ½ cup granulated sugar
  • ½ cup light brown sugar, packed
  • 1 large egg, room temperature
  • 1 teaspoon vanilla extract
  • 1¼ cups all-purpose flour
  • ¾ teaspoon baking powder
  • ¼ teaspoon kosher salt

For the Filling

  • 1 cup marshmallow fluff or marshmallow creme
  • 1 cup milk chocolate chips or chopped chocolate
  • 2 tablespoons heavy cream
  • 4 graham crackers, crushed

Tools You’ll Need

  • Mixing bowls
  • Electric mixer
  • Baking sheet
  • Parchment paper
  • Spatula

Suggested Substitutions & Additions

  • Use crunchy peanut butter for texture
  • Add mini chocolate chips to cookie dough
  • Use dark chocolate for richer flavor
  • Sprinkle flaky sea salt on top
  • Add toasted marshmallows for extra gooeyness

How to Make Peanut Butter S’mores Sandwich Cookies

Step 1: Preheat oven

Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.

Step 2: Cream butter and sugars

Beat peanut butter, butter, granulated sugar, and brown sugar until light and creamy.

Step 3: Add egg and vanilla

Mix in egg and vanilla extract until smooth.

Step 4: Add dry ingredients

Stir in flour, baking powder, and salt until a soft dough forms.

Step 5: Bake cookies

Roll dough into balls and slightly flatten with a fork.

Bake for 10–12 minutes until edges are lightly golden.

Your kitchen will smell INSANE at this point

Step 6: Make chocolate filling

Warm heavy cream and pour over chocolate chips. Stir until smooth and glossy.

Step 7: Assemble sandwiches

Spread marshmallow fluff onto one cookie, drizzle with chocolate ganache, and sprinkle crushed graham crackers.

Top with another cookie and gently press together.

Step 8: Serve & enjoy

That gooey marshmallow pull? Absolute dessert perfection

What to Serve with Peanut Butter S’mores Sandwich Cookies

These cookies pair perfectly with:

  • Cold milk
  • Hot chocolate
  • Vanilla ice cream
  • Coffee or espresso
  • Chocolate milkshakes

Tips for Making It Perfect

  • Don’t overbake the cookies
  • Let cookies cool before filling
  • Use room-temperature ingredients
  • Chill assembled cookies slightly for cleaner layers
  • Add extra graham cracker crumbs on top for crunch

Storage Instructions

  • Room temperature: 3 days
  • Refrigerator: up to 1 week
  • Freezer: up to 2 months

The filling stays deliciously gooey.

General Information

S’mores desserts have exploded in popularity because they combine nostalgic campfire flavors with rich bakery-style treats.

Adding peanut butter takes the classic combination to another level—bringing salty richness that balances the sweet marshmallow and chocolate perfectly.

Honestly? These taste like gourmet bakery cookies crossed with campfire memories

Frequently Asked Questions

Can I use marshmallows instead of fluff?

Yes, melted marshmallows work too.

Can I freeze these cookies?

Absolutely—freeze individually for best texture.

Why are my cookies dry?

They were likely overbaked.

Can I use natural peanut butter?

You can, but the texture may be softer.

Can I make them ahead?

Yes! They’re great chilled overnight.

Conclusion

These Peanut Butter S’mores Sandwich Cookies are gooey, rich, chewy, and dangerously addictive. Every bite gives you soft peanut butter cookies, creamy marshmallow filling, melted chocolate, and crunchy graham cracker goodness all at once

If you loved these cookies, try:

Trust me… nobody eats just one

Interactive Elements

If you make these cookies, I NEED to see that gooey marshmallow center
Share your cookie stack on Pinterest 👉 https://www.pinterest.com/poulefrecipe/

And tell me… warm and gooey or chilled and fudgy?

Nutritional Information (Approx. per sandwich cookie)

NutrientAmount
Calories390 kcal
Protein8g
Carbohydrates34g
Sugar24g
Fat25g
Fiber2g
Sodium180mg
Print
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Ultimate Peanut Butter S’mores Sandwich Cookies (Gooey, Chocolatey & Completely Irresistible!)


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  • Author: Gianna Poulef
  • Total Time: PT32M
  • Yield: 10 sandwich cookies 1x
  • Diet: Vegetarian

Description

Soft peanut butter sandwich cookies filled with marshmallow fluff, melted chocolate, and graham cracker crumbs.


Ingredients

Scale

1 1/2 cups creamy peanut butter

1/2 cup unsalted butter

1/2 cup granulated sugar

1/2 cup brown sugar

1 egg

1 tsp vanilla extract

1 1/4 cups all-purpose flour

3/4 tsp baking powder

1/4 tsp kosher salt

1 cup marshmallow fluff

1 cup chocolate chips

2 tbsp heavy cream

4 graham crackers, crushed


Instructions

1. Preheat oven to 175°C

2. Cream butter, peanut butter, and sugars

3. Add egg and vanilla

4. Mix in dry ingredients

5. Shape and bake cookies

6. Prepare chocolate filling

7. Assemble sandwich cookies with marshmallow fluff and chocolate

8. Serve and enjoy

Notes

Do not overbake

Cool cookies before filling

Store chilled for best texture

  • Prep Time: PT20M
  • Cook Time: PT12M
  • Category: Dessert
  • Method: Bake
  • Cuisine: American

Nutrition

  • Serving Size: 1 sandwich cookie
  • Calories: 390
  • Sugar: 24g
  • Sodium: 180mg
  • Fat: 25g
  • Saturated Fat: 10g
  • Unsaturated Fat: 12g
  • Trans Fat: 0g
  • Carbohydrates: 34g
  • Fiber: 2g
  • Protein: 8g
  • Cholesterol: 35mg
Ultimate Peanut Butter S’mores Sandwich Cookies (Gooey, Chocolatey & Completely Irresistible!)
Gianna Poulef
CEO, Chef & Recipe Creator at BLYNO LLC | Website

I’m Gianna Poulef from Poulef Recipes. I love sharing perfected dishes from my kitchen. I’m sure they’ll earn a spot in your heart. Let’s savor this journey together!.

Let’s be friends!

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