If you’re on the hunt for a cozy, irresistible treat, this Peanut Butter Marshmallow Cookies Recipe will quickly become your new favorite. Imagine chewy peanut butter cookies generously studded with mini semi-sweet chocolate chips and gooey mini marshmallows, all baked to golden perfection. It’s the ideal mix of sweet, nutty, and soft textures that simply melts in your mouth. Made with simple pantry staples, these cookies bring warmth and comfort with every bite, making them perfect for any occasion or just a sweet pick-me-up at home.

Ingredients You’ll Need

The image shows a top-down view of several small white bowls and a light gray plate arranged on a white marbled surface. The largest white bowl at the top left contains a mix of white flour, baking soda, and salt with a powdery texture. To its right, a smaller white bowl holds light brown, crumbly brown sugar. Below the flour bowl and to the left, a scalloped white bowl is filled with dark brown chocolate chips clustered together. Just below the brown sugar, a light gray plate displays several rectangular chunks of pale yellow butter. In the center, a small plain white bowl contains white granulated sugar with a fine texture. Below the sugar, a scalloped white bowl holds one whole white egg. To the bottom left, a blue measuring cup is filled with small white mini marshmallows. On the bottom right, a small white bowl holds dark amber vanilla extract, and next to it, a blue measuring spoon contains smooth, light brown peanut butter with slight swirls. All the ingredients are neatly spaced out. Photo taken with an iphone --ar 4:5 --v 7

Each ingredient in this recipe plays a crucial role, combining to create the perfect balance of flavor, texture, and color. You’ll be amazed at how simple pantry basics transform into a show-stopping cookie that’s soft, chewy, and packed with peanut buttery goodness and sweet surprises.

10 tablespoons unsalted butter (room temperature): Gives richness and a tender crumb to the cookies.
⅓ cup creamy peanut butter: Adds that signature nutty flavor and moist texture.
2 teaspoons vanilla extract: Enhances the overall sweetness and aroma.
1 large egg (room temperature): Binds everything together and adds moisture.
1 1/2 cups all-purpose flour: The sturdy base that holds the cookie together without making it tough.
3/4 teaspoon baking soda: Helps the cookies rise and spread just right.
1/2 teaspoon salt: Balances sweetness and intensifies the peanut butter flavor.
⅔ cup packed light or dark brown sugar: Adds molasses-rich sweetness and helps keep cookies chewy.
1/4 cup granulated sugar: Lightens texture and adds a gentle crunch on the edges.
3/4 cup mini semi-sweet chocolate chips: Brings bursts of melty chocolate delight in every bite.
1/2 cup mini marshmallows: Creates soft, gooey pockets for heavenly texture contrast.

How to Make Peanut Butter Marshmallow Cookies Recipe

Step 1: Prepare the Dry Ingredients

Start by whisking together the all-purpose flour, baking soda, and salt in a medium bowl. This ensures the leavening is evenly distributed and your cookies will bake uniformly. It’s a simple step that makes a big difference in texture.

Step 2: Cream Butter, Peanut Butter, and Sugars

In your mixer bowl, beat the softened butter, creamy peanut butter, brown sugar, and granulated sugar until smooth and fluffy—about two minutes. This creaming process is key to getting your cookies soft and chewy, as it traps air into the batter and helps the sugars dissolve evenly.

Step 3: Add Egg and Vanilla

Beat in the egg first, followed by the vanilla extract. Make sure to scrape down the sides to incorporate every bit of batter. This step adds moisture and flavor while binding the ingredients together for a tender bite.

Step 4: Combine Dry Ingredients into Wet

Turn your mixer to low speed and slowly add the flour mixture until just combined. Overmixing here can lead to tough cookies, so stop as soon as the flour disappears. Then, fold in your mini chocolate chips gently with a spatula.

Step 5: Fold in Mini Marshmallows

Gently stir in the mini marshmallows to prevent them from melting into the dough. This step guarantees gooey pockets of marshmallow in every cookie, elevating the classic peanut butter cookie to something truly special.

Step 6: Chill the Dough

Using an ice cream scoop, form dough balls and place them on a small baking sheet. Chill in the fridge for at least one hour. Chilling slows down spreading in the oven and deepens the flavors for that perfect chewy texture.

Step 7: Bake to Perfection

Preheat your oven to 350 degrees Fahrenheit and line baking sheets with parchment paper. Place six dough balls per sheet, spaced 2 to 3 inches apart to allow for spreading. Bake one tray at a time for 12 to 14 minutes, or until the cookies’ edges turn a light golden brown. Let them cool completely on the sheet—you’ll see the marshmallows soften beautifully as the cookies set.

How to Serve Peanut Butter Marshmallow Cookies Recipe

A close-up image of a soft, round cookie with a bite taken out of the edge, showing a light brown dough base mixed with dark chocolate chips and golden toasted marshmallows melted on top. The cookie lies on a white marbled surface scattered with small white marshmallows and chocolate chips. In the foreground, a silver spoon holds a thick layer of creamy light brown peanut butter. Another whole cookie is partially visible in the background. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

For an extra touch of indulgence, sprinkle a few extra mini chocolate chips or marshmallows on top right after baking, while the cookies are still warm. A light dusting of powdered sugar can add a charming finish and bring out the cookie’s sweet notes.

Side Dishes

These cookies pair wonderfully with a tall glass of cold milk, a cup of rich hot cocoa, or even a creamy latte. Their gooey, peanut buttery sweetness balances perfectly with creamy beverages, making snack time feel like a true treat.

Creative Ways to Present

Want to impress? Serve these cookies stacked on a rustic wooden board alongside fresh berries or dollops of whipped cream. For a fun twist, sandwich two cookies together with a layer of marshmallow fluff or peanut butter cream in the middle for a delightful handheld dessert.

Make Ahead and Storage

Storing Leftovers

Store any leftover cookies in an airtight container at room temperature where they’ll stay soft and chewy for up to three days. This keeps all those wonderful textures intact without drying out the marshmallows or peanut butter.

Freezing

If you want to keep your Peanut Butter Marshmallow Cookies Recipe ready for an anytime treat, freeze the dough balls before baking or freeze baked cookies. Dough balls can be frozen for up to one month; just thaw slightly before baking. Baked cookies freeze well too and thaw quickly at room temperature.

Reheating

To bring your frozen or stored cookies back to life, warm them in the microwave for about 10-15 seconds or heat them in a 300-degree oven for 5 minutes. This revives their soft, melty texture, making them taste freshly baked again.

FAQs

Can I use natural peanut butter instead of creamy?

Natural peanut butter tends to be oilier and less stable in baking, which can affect the cookie texture and spread. For best results, stick with creamy commercial peanut butter like Jif or Skippy.

Do I have to chill the cookie dough?

Chilling isn’t absolutely mandatory but highly recommended. It prevents excess spreading, enhances the depth of flavor, and improves the cookie’s chewy texture dramatically.

Can I substitute the mini chocolate chips with something else?

Absolutely! Milk chocolate chips, dark chocolate chips, peanut butter chips, or even chocolate chunks all work beautifully in this recipe, lending unique twists to flavor and texture.

Are these cookies suitable for smaller batches?

Yes, you can scale down the recipe or make smaller cookie dough balls for bite-sized treats. Just reduce baking time by a few minutes for smaller cookies to avoid over-baking.

Why do the marshmallows melt away sometimes?

Mixing the marshmallows in and baking at the right temperature helps preserve their shape. Too much stirring or very hot ovens can cause them to melt completely into the dough, losing that gooey texture.

Final Thoughts

If you want a cookie that feels like a warm hug straight from the oven, the Peanut Butter Marshmallow Cookies Recipe is simply unbeatable. With its perfect combo of chewy peanut butter, melty chocolate, and soft marshmallows, it’s a snack that brings joy with every bite. I truly can’t wait for you to try making these yourself and share that delicious magic with your loved ones!