Name: Costco Marshmallow Crispy Cookies
Prep time: 10 min
Cook time: 12 min
Total time: 22 min
Cuisine: American
Ingredients: 1 cup unsalted butter; 1 cup brown sugar; 1/2 cup granulated sugar; 2 large eggs; 2 teaspoons vanilla extract; 2 1/4 cups all-purpose flour; 1 teaspoon baking soda; 1/2 teaspoon salt; 2 cups mini marshmallows; 2 cups crispy rice cereal

There’s something undeniably nostalgic about biting into a marshmallow crispy treat, but these Costco-inspired Marshmallow Crispy Cookies take that classic joy and add a delicious twist. Imagine the buttery, gooey comfort of marshmallow cereal squares, but with a golden cookie edge and soft, chewy center that you can’t stop eating.

This cookie recipe captures everything you love about those childhood treats but bakes it into a cookie form that’s perfectly portioned and even more snackable. Whether you’re prepping a sweet treat for a school bake sale, planning a cozy movie night, or just craving a little afternoon pick-me-up, these cookies deliver with flavor, texture, and ease.

Why You’ll Love This Marshmallow Crispy Cookies Recipe

These cookies bring you that warm, homemade feeling with minimal effort. They combine pantry-friendly ingredients with quick prep, and the final product is a balance of crispy and gooey that feels both indulgent and comforting. Plus, they hold up well, making them ideal for gifting or snacking throughout the week.

What Kind of Cereal Should I Use?

Classic Rice Krispies are the go-to for this recipe, but feel free to get creative. Fruity rice cereal can add a fun color and flavor pop, or try cocoa rice cereal for a chocolatey version. Just make sure it’s a crispy puffed rice style cereal for the right texture.

Ingredients for the Marshmallow Crispy Cookies

To make these cookies absolutely irresistible, you’ll need a handful of simple ingredients that each serve a tasty purpose. Let’s break it down:

Butter gives these cookies richness and that melt-in-your-mouth quality. Use unsalted so you can control the salt level.

Brown Sugar adds a deep, caramel-like sweetness and contributes to the cookie’s chewiness.

Granulated Sugar brings just the right amount of crispness and balances the moisture from the brown sugar.

Eggs bind everything together and add softness.

Vanilla Extract enhances the marshmallow and butter flavors beautifully.

All-Purpose Flour forms the structure of the cookie while still allowing it to be soft and tender.

Baking Soda gives the cookies a slight lift and helps them spread evenly.

Salt balances the sweet and enhances all the other flavors.

Mini Marshmallows are the gooey star of the show. They caramelize slightly while baking, giving you melty pockets of joy in every bite.

Crispy Rice Cereal adds that signature crunch and nostalgic flavor that makes these cookies stand out.

How To Make the Marshmallow Crispy Cookies

Step 1: Cream the Butter and Sugars

Start by creaming your butter, brown sugar, and granulated sugar together until smooth and fluffy. This sets the base for a chewy and flavorful cookie.

Step 2: Add Wet Ingredients

Mix in the eggs one at a time, followed by the vanilla extract. Blend until everything is fully incorporated.

Step 3: Combine Dry Ingredients

In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add this to your wet mixture, mixing just until a dough forms.

Step 4: Fold in the Marshmallows and Cereal

Gently fold in the mini marshmallows and crispy rice cereal. Be careful not to overmix, as you want to keep the cereal nice and crisp.

Step 5: Scoop and Bake

Scoop the dough onto a lined baking sheet, spacing them a couple of inches apart. Bake at 350°F (175°C) for about 10–12 minutes, or until the edges are golden and centers are just set.

Step 6: Cool and Enjoy

Let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack. They’ll firm up as they cool but stay beautifully chewy inside.

How to Serve and Store Marshmallow Crispy Cookies

These cookies are best served slightly warm when the marshmallows are gooey and the cereal still has a delicate crunch. Perfect for after-school snacks, lunchbox treats, or a late-night sweet craving. This batch makes around 24 cookies, easily serving a family or a small gathering.

To store, keep them in an airtight container at room temperature for up to 4 days. For longer storage, freeze them with parchment between layers and just pop one in the microwave for 10 seconds to relive that fresh-baked magic.

What to Serve With Marshmallow Crispy Cookies?

A Tall Glass of Cold Milk

You can’t go wrong with the classic. The creamy milk contrasts the sweet, chewy cookie perfectly.

Hot Cocoa with Whipped Cream

For cozy evenings, pair these cookies with a mug of rich hot cocoa. Add a dash of cinnamon for a festive twist.

Vanilla Bean Ice Cream

Sandwich a scoop between two cookies for an easy and indulgent dessert.

Caramel Latte

A touch of coffee balances the sweetness and brings out the cookie’s buttery notes.

Fresh Berries

Strawberries or raspberries offer a bright and tart contrast to the gooey richness.

Chocolate Dipping Sauce

Turn these into a party platter by adding a small bowl of melted chocolate to dip them in.

Cinnamon Tea

Light and spiced, this tea adds warmth without overpowering the cookie flavor.

If you love these Marshmallow Crispy Cookies, you’ll probably enjoy these other favorites:

Butterfinger Caramel Crunch Mini Pies for a nutty and gooey explosion.
Kentucky Butter Cake Cookies when you want buttery richness in every bite.
Whimsical Cotton Candy Cookies Delight for something fun and colorful.
Peggi’s Gigantic Crispy Peanut Butter Cookies for a nostalgic peanut butter twist.
Lemon Churro Cookies if you want zingy meets cinnamon.

Save This Recipe For Later

📌 Save this recipe to your Pinterest dessert board so you can come back to it any time.

And let me know in the comments how yours turned out. Did you switch up the cereal? Try a drizzle of chocolate on top?

I love hearing how others make these recipes their own. Questions are welcome too, let’s help each other bake smarter.

Explore beautifully curated health-boosting drinks on Zoe Recipes on Pinterest and discover your new go-to for feeling great!

Conclusion

Costco Marshmallow Crispy Cookies are pure joy in cookie form. They combine familiar flavors with a fresh twist that makes them perfect for casual cravings or crowd-pleasing treats. Whether you’re baking for yourself or to share, these cookies are always a hit. So grab your mixing bowl and let’s turn some everyday ingredients into something seriously delicious.