Marshmallow Crispy Cookies Costco Copycat
Have you ever wandered through the aisles of Costco, your senses tingling with the sweet aroma of baked treats, only to come across those delightful Marshmallow Crispy Cookies? I know I have! There’s something undeniably special about them—the perfect combination of gooey marshmallows, crispy rice cereal, and a buttery cookie base that just melts in your mouth. Well, I’m here to share my easy homemade version of this beloved treat that you can whip up right in your own kitchen.
What makes this Marshmallow Crispy Cookies Costco Copycat recipe so special is its ability to capture that store-bought magic while allowing you to enjoy them fresh and warm. With just a handful of ingredients and a simple process, you’ll create a batch that’s not only delicious but also fun to make. Whether you’re looking to impress friends at a gathering or simply satisfy your own sweet tooth, these cookies are sure to bring smiles all around.
So grab your mixing bowls and let’s dive into making these scrumptious Marshmallow Crispy Cookies! You’ll love how easy they are to make and how they bring that Costco flavor straight to your home. Trust me, once you take a bite, you’ll be hooked!
Ingredient Notes
To make the perfect ‘Marshmallow Crispy Cookies Costco Copycat’, you’ll need a handful of key ingredients that come together to create that delightful chewy and crispy texture. Here’s what you’ll need:
- Rice Cereal: The backbone of our crispy cookies. I prefer using the classic rice cereal for that familiar crunch.
- Marshmallows: Mini marshmallows work best for these cookies, as they melt perfectly without overwhelming the texture. If you’re in a pinch, you can use large marshmallows, just chop them into smaller pieces.
- Butter: Unsalted butter is ideal. It gives a rich flavor without the additional saltiness. You can substitute with coconut oil for a dairy-free option.
- Peanut Butter: This not only adds flavor but also helps bind the mixture together. If you have nut allergies, sunflower seed butter is a great alternative.
- Brown Sugar: For that sweet, molasses-like flavor. You can replace it with coconut sugar for a healthier twist.
- Vanilla Extract: This enhances all the flavors. If needed, a splash of almond extract can also work wonders.
- Chocolate Chips: Semi-sweet chocolate chips are perfect for a hint of decadence. You can opt for dairy-free chips to keep it vegan.
Step-by-Step Instructions
Now that we have our ingredients ready, let’s dive into the steps to create our ‘Marshmallow Crispy Cookies Costco Copycat’. Follow these easy instructions:
- Prepare Your Baking Sheet: Start by lining a baking sheet with parchment paper. This will prevent the cookies from sticking and make cleanup a breeze.
- Melt the Butter: In a large saucepan, melt 1/4 cup of unsalted butter over low heat. Make sure not to let it brown; we just want it melted.
- Add the Marshmallows: Once the butter is melted, add 4 cups of mini marshmallows to the saucepan. Stir continuously until the marshmallows are completely melted and smooth.
- Incorporate Peanut Butter: Remove the saucepan from heat and stir in 1/2 cup of peanut butter until fully combined with the marshmallow mixture.
- Mix in Brown Sugar and Vanilla: Add 1/2 cup of brown sugar and 1 teaspoon of vanilla extract to the mix. Stir until everything is well integrated.
- Add Rice Cereal: Gradually fold in 6 cups of rice cereal until evenly coated. Be gentle to avoid crushing the cereal.
- Chocolate Chips Time: Stir in 1 cup of semi-sweet chocolate chips. This step is optional, but I highly recommend it for that extra indulgence.
- Shape the Cookies: Using a spoon or your hands, scoop out portions of the mixture and shape them into cookies on the prepared baking sheet. You can make them as large or small as you like.
- Let Them Set: Allow the cookies to cool and set for about 30 minutes. This helps them hold their shape.
Tips & Suggestions
Here are some helpful tips to ensure your ‘Marshmallow Crispy Cookies Costco Copycat’ turn out perfectly:
- Don’t Overmix: When adding the rice cereal, mix just until combined. Overmixing can lead to a dense texture.
- Customize Your Cookies: Feel free to add other mix-ins like chopped nuts, dried fruits, or even M&Ms for a fun twist!
- Use Fresh Ingredients: For the best flavor and texture, make sure your marshmallows and rice cereal are fresh. Stale ingredients can affect the outcome.
- Adjust Sweetness: If you prefer a less sweet cookie, you can reduce the amount of brown sugar or chocolate chips slightly.
- Experiment with Flavors: Try adding a pinch of sea salt on top of the cookies before they set for a sweet and salty combination.
Storage
To keep your ‘Marshmallow Crispy Cookies Costco Copycat’ fresh and delicious, follow these storage tips:
- Room Temperature: Store the cookies in an airtight container at room temperature. They should stay fresh for up to a week.
- Refrigeration: If you live in a warm climate, consider refrigerating the cookies to maintain their shape and texture. Just make sure to let them come to room temperature before enjoying.
- Freezing: For longer storage, you can freeze the cookies. Layer them between parchment paper in an airtight container. They can be frozen for up to three months. Thaw at room temperature when ready to eat.
Enjoy making your ‘Marshmallow Crispy Cookies Costco Copycat’! They’re sure to be a hit with family and friends, capturing that beloved Costco treat right in your kitchen.

Final Thoughts
If you’re looking for a delightful treat that brings back fond memories of your trips to Costco, then the Marshmallow Crispy Cookies Costco Copycat is an absolute must-try! These cookies combine the perfect balance of chewy marshmallows and crispy rice cereal, all wrapped in a sweet, buttery cookie that will have you reaching for seconds (and thirds!). Whether you’re baking for a special occasion, a cozy family gathering, or just to satisfy your sweet tooth, this recipe is sure to impress. So gather your ingredients, roll up your sleeves, and get ready to indulge in a nostalgic flavor that’s both comforting and delicious. You won’t regret making these Marshmallow Crispy Cookies Costco Copycat – they’re a true crowd-pleaser!


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