Name: Peanut Butter Marshmallow Cookies Recipe
Prep time: 15 min
Cook time: PT-497867H11M41S
Total time: 1 h 29 min
Cuisine: American
Ingredients: 1 1/2 cups (187.5 g) all purpose flour; 3/4 teaspoon baking soda; 1/2 teaspoon salt; 10 tablespoons (140 g) unsalted butter, room temperature; ⅓ cup (86 g) creamy peanut butter; 2 teaspoons vanilla extract; 1 large egg, room temperature; ⅔ cup (146.67 g) brown sugar, light or dark, packed; 1/4 cup (50 g) granulated sugar; 3/4 cup (135 g) mini chocolate chips; 1/2 cup (25 g) mini marshmallows

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I absolutely love sharing this Peanut Butter Marshmallow Cookies Recipe with friends because it delivers the perfect combination of chewy, sweet, and nutty flavors that never fail to brighten my day. Every bite melts with the rich creaminess of peanut butter, the soft puffiness of marshmallows, and a touch of melty chocolate chips, making these cookies irresistibly delightful. I find making them is surprisingly simple, yet the results always impress, whether I’m baking for a cozy night in or a fun gathering.

Why You’ll Love This Peanut Butter Marshmallow Cookies Recipe

From the very first time I tried this Peanut Butter Marshmallow Cookies Recipe, I was hooked on the wonderful balance of flavors it offers. The creamy peanut butter gives each cookie a rich, nutty character, while the mini marshmallows add wonderful soft pockets of sweetness that just elevate the texture to another level. Those melty chocolate chips scattered throughout bring a lovely contrast that keeps every bite exciting. I love how this combination feels indulgent but still comforting and familiar.

Another thing that makes me rave about this recipe is how easy it is to prepare. The steps are straightforward, and even if baking is not your everyday activity, you’ll feel confident making these. Plus, chilling the dough is a game changer—I always find it helps the flavors deepen and stops the cookies from spreading too thin. These cookies are perfect for so many occasions, whether you’re gifting them during holidays, packing them for a picnic, or just craving something sweet after dinner. Honestly, they’ve become one of my go-to treats whenever I want to impress without too much fuss.

Ingredients You’ll Need

The image shows a top view of several small white bowls and a white plate arranged on a white marbled surface. In the top left, a white bowl holds white flour mixed with baking soda and salt, showing a powdery texture. To its right, a white bowl contains light brown sugar with a crumbly texture. Below the brown sugar is a white plate with solid butter sticks, pale yellow and smooth. In the bottom left, a scalloped white bowl is filled with dark brown chocolate chips, small and round. Next to it, a blue measuring cup holds white mini marshmallows, soft and puffy. Near the center, a white scalloped dish contains one whole white egg, smooth and round. To the right of the egg, a small white bowl holds dark amber vanilla extract. Finally, a blue measuring spoon filled with smooth light brown peanut butter is at the bottom right. All items are neatly arranged, clearly labeled with black text. Photo taken with an iphone --ar 4:5 --v 7

The beauty of this recipe lies in its simple yet purposeful ingredients. Each one plays a key role in combining to create that perfect cookie: soft, flavorful, and just a little gooey in all the right places.

Unsalted butter (10 tablespoons): Makes the cookies tender and adds that rich buttery flavor.
Creamy peanut butter (⅓ cup): Provides the classic nutty base and helps keep the dough moist.
Vanilla extract (2 teaspoons): Enhances all the flavors with a hint of warm sweetness.
Large egg (1): Binds the dough together and adds structure.
All purpose flour (1 1/2 cups): Forms the body of the cookies, giving them that perfect chew.
Baking soda (3/4 teaspoon): Helps the cookies rise and spread just right.
Salt (1/2 teaspoon): Balances the sweetness and deepens the flavor profile.
Brown sugar (⅔ cup, packed): Adds moisture and a caramel-like depth.
Granulated sugar (1/4 cup): Gives a slight crispness to the cookie edges.
Mini chocolate chips (3/4 cup): Adds bursts of melty chocolate magic in every bite.
Mini marshmallows (1/2 cup): Bring a soft, chewy contrast that is just pure joy.

Directions

Step 1: In a medium bowl, whisk together the all purpose flour, baking soda, and salt until they are fully combined. This ensures that every bite will have an even distribution of rising agents and seasoning.

Step 2: Using a hand mixer or stand mixer, cream the room temperature butter, creamy peanut butter, brown sugar, and granulated sugar together until you have a smooth and creamy mixture, about 2 minutes. This step is key to giving the cookies their soft texture.

Step 3: Beat in the egg followed by the vanilla extract. Keep mixing until everything is fully incorporated. Don’t forget to scrape down the sides of the bowl to make sure no ingredients hide out at the edges.

Step 4: Reduce the mixer speed to low and gradually add the dry ingredients to the wet mixture. Mix gently until just combined to avoid overworking the dough.

Step 5: Fold in the mini chocolate chips and mini marshmallows with a spatula or wooden spoon. This helps preserve their shape and keeps the marshmallows from melting completely into the dough.

Step 6: Scoop the cookie dough into rounded domes using an ice cream scoop and place them on a small baking sheet. Chill the dough in the refrigerator for at least 1 hour. This chilling step is crucial; it prevents the cookies from spreading too much and intensifies the flavors.

Step 7: Preheat your oven to 350 degrees Fahrenheit and line two baking sheets with parchment paper. Arrange six cookie dough balls on each baking sheet, spacing them about 2 to 3 inches apart.

Step 8: Bake one tray at a time for 12 to 14 minutes. You’ll know they’re done when the edges turn a delicate light golden brown but the centers still look a little soft.

Step 9: Let the cookies cool completely on the baking sheet. This resting time helps them set perfectly and keeps them chewy yet sturdy enough to pick up.

Servings and Timing

This recipe yields about 12 large cookies, perfect if you’re baking for a small gathering or just a couple of days of indulgence. Prep time is around 15 minutes, but factor in the 1-hour chilling time for the dough to get the best results. Baking takes about 12 to 14 minutes per tray, so total active cooking time is roughly 25 minutes. Altogether, from start to finish including chilling and baking, you’re looking at about 1 hour and 40 minutes. Patience really pays off here!

How to Serve This Peanut Butter Marshmallow Cookies Recipe

The image shows several soft, round cookies with a light golden-brown color, featuring melted marshmallow pieces and dark chocolate chips embedded throughout. One cookie in the foreground has a bite taken out of it, revealing a soft and slightly chewy texture inside. Scattered mini chocolate chips and whole mini white marshmallows lie around the cookies on a white marbled surface. A silver spoon with a creamy light brown spread rests near the cookies, hinting at peanut butter. photo taken with an iphone --ar 4:5 --v 7

When it comes to serving these cookies, I love keeping things simple and cozy. They’re delicious at room temperature, which makes them perfect for packing in lunch boxes or enjoying with a cup of hot coffee or tea. For a more festive touch, I sometimes warm them slightly in the microwave for 10-15 seconds so the marshmallows soften even more, turning each bite into a gooey delight.

If I’m hosting a party or a casual get-together, I like to plate these cookies alongside small bowls of fresh fruit or some crunchy nuts. The freshness and crunch add such a wonderful contrast to the soft, chewy cookies. Garnishing with a sprinkle of flaky sea salt on top before baking can really enhance the peanut butter flavor and add a little surprise element that impresses guests every time.

For drinks, I can’t resist pairing these cookies with a cold glass of milk or even a creamy vanilla latte. If you’re serving adults, a lightly sweetened peanut butter whiskey cocktail or a chocolate red wine complement the flavors beautifully and add a bit of elegance to the experience. These cookies are so versatile they work for family dinners, holiday celebrations, or casual weeknight treats.

Variations

I love experimenting with this recipe to make it my own or suit different tastes. If you want to tweak the flavor, try swapping the semi-sweet chocolate chips for dark chocolate or peanut butter chips to amplify the peanut buttery goodness. For a sweeter twist, white chocolate chips can transform these cookies into a fun, dessert-like treat.

If you’re looking for a dietary-friendly option, this recipe can be adapted fairly easily. For gluten-free versions, I substitute the all purpose flour with a 1-to-1 gluten-free baking blend and have always been happy with the results. Vegan bakers can swap the butter for a vegan alternative and the egg for a flax or chia seed egg, but I recommend a bit more chilling time as the texture adjusts slightly. The peanut butter and marshmallows keep their magic no matter the adaptations!

Finally, for a little flair, try mixing in some chopped nuts like pecans or walnuts for extra crunch, or add a pinch of cinnamon or cayenne for a spicy twist. You can also experiment with baking these cookies as smaller bites—just reduce the baking time by a couple of minutes for perfectly chewy mini cookies.

Storage and Reheating

Storing Leftovers

I store leftover Peanut Butter Marshmallow Cookies in an airtight container at room temperature to keep them soft and chewy. They usually stay fresh for about 3 days. If you want to extend their life, placing a slice of bread inside the container helps maintain moisture and prevents them from drying out.

Freezing

These cookies freeze beautifully. I recommend freezing the baked cookies in a single layer on a baking sheet before transferring them to a freezer-safe container or bag. That way, they don’t stick together. They can keep well frozen for up to a month. When you want a treat, just thaw at room temperature for an hour or two.

Reheating

When reheating, I gently warm the cookies in the microwave for about 10 to 15 seconds or in a low oven at 300 degrees Fahrenheit for 5 to 7 minutes. This brings back the soft, chewy texture and makes those marshmallows gooey and fresh again. Avoid overheating, as this can dry them out and make the cookies crumbly.

FAQs

Can I use natural peanut butter instead of creamy?

I don’t recommend natural peanut butter for this recipe because it has a different oil content and texture, which can affect the dough’s consistency and final cookie texture. Creamy peanut butter like Jif or Skippy works best for that perfect chewy-soft result.

Why is chilling the cookie dough so important?

Chilling the dough prevents the cookies from spreading too much during baking. It also lets the flavors develop more deeply which makes each bite more flavorful and satisfying. I always chill for at least one hour for the best results.

Can I skip the marshmallows if I don’t have any?

You can, but the mini marshmallows add a wonderful chewy softness and a touch of melty sweetness that really sets these cookies apart. If not available, you might want to add a little extra chocolate chips or even some chopped nuts to balance the texture.

What’s the best way to measure flour for this recipe?

To avoid dense, tough cookies, it’s best to spoon the flour into your measuring cup and level it off with a knife rather than scooping directly from the bag. Too much flour can prevent the cookies from spreading and make them hard.

Can I make these cookies smaller than described?

Absolutely! I often make smaller cookies using about 1.5 tablespoons of dough per cookie. Just reduce the baking time by 2 minutes, and keep an eye on them so they stay soft and chewy without overbaking.

Conclusion

I truly believe that this Peanut Butter Marshmallow Cookies Recipe is a game changer in the cookie world. It’s one of those treats that feels both nostalgic and fresh all at once, and it’s so easy to make anyone feel special. I can’t wait for you to try it and experience those soft marshmallows and rich peanut butter melting together in every bite. Whether you’re baking for yourself or sharing with loved ones, these cookies are sure to become a favorite.