As the aroma of warm, brown butter fills my kitchen, I can’t help but feel a wave of nostalgia wash over me, reminiscent of those carefree days spent in front of the TV, snacking on my favorite treats. In today’s recipe, I’m excited to share my take on Marshmallow Crispy Cookies, a delicious Costco copycat that takes simplicity to new heights. These scrumptious cookies combine the delightful crunch of rice cereal with the gooey goodness of marshmallows, all enveloped in a rich, caramel-like dough. What’s even better? They’re quick to whip up and require no chilling time, making them perfect for any spontaneous sweet craving. Plus, with gluten-free options available, everyone can indulge! Ready to bake? Let’s dive into this sweet adventure!

Why Make Marshmallow Crispy Cookies?
Quick and Easy: These cookies come together in no time, perfect for busy bakers looking for a delicious treat without the fuss.
Nostalgic Flavor: Revel in the delightful combination of childhood favorites with a twist—a cookie that’s both chewy and crunchy.
Customizable: Feel free to swap in chocolate chips or butterscotch for a unique take, making them a treat for everyone! Consider trying this recipe alongside our Chocolate Chip Cookies for even more delicious options.
Crowd-Pleaser: Ideal for gatherings, these cookies are sure to impress family and friends, proving that homemade beats store-bought any day.
Gluten-Free Option: With simple substitutions, everyone can enjoy this scrumptious dessert, ensuring nobody misses out!
Marshmallow Crispy Cookies Ingredients
For the Dough
• Salted Butter – Adds richness and flavor; can be replaced with 7 tablespoons of melted butter if preferred.
• Brown Sugar – Provides moisture and a deep caramel flavor that enhances the cookie.
• Granulated Sugar – Adds sweetness and helps achieve a lovely golden-brown color.
• Large Egg – Binds ingredients together; use one at room temperature for optimal mixing.
• Vanilla Extract – Enhances flavor beautifully; feel free to substitute with vanilla paste for a richer taste.
• Baking Soda – Acts as a leavening agent to give the cookies a slight rise.
• Salt – Balances sweetness and elevates the overall flavor profile.
• All-Purpose Flour – Provides structure to the cookies; may substitute with gluten-free flour for a safe option.
For the Crunch
• Rice Krispie Cereal – Adds delightful crunch and texture, making each bite fun.
• Mini Marshmallows – Introduces chewy goodness; freeze them beforehand to prevent excessive melting during baking.
For Garnish
• Flaked Salt – Sprinkled on top for an irresistible flavor boost that takes these cookies to the next level!
Step‑by‑Step Instructions for Marshmallow Crispy Cookies
Step 1: Preheat and Prepare
Begin by preheating your oven to 350°F (175°C) and line a baking sheet with parchment paper to ensure easy cookie removal. While the oven warms up, take a moment to freeze the mini marshmallows; this will help them retain their shape during baking, resulting in delightful bits of chewy goodness in your Marshmallow Crispy Cookies.
Step 2: Brown the Butter
In a medium saucepan, melt ½ cup of salted butter over medium heat. Stir continuously until the butter turns a beautiful golden brown and releases a nutty aroma, which should take about 5–7 minutes. Once browned, remove the saucepan from heat and allow the butter to cool briefly, letting the flavors deepen and enhancing the richness of your cookies.
Step 3: Mix Sugars and Butter
In a large mixing bowl, combine the browned butter with ¾ cup of brown sugar and ¼ cup of granulated sugar. Using a whisk or an electric mixer, blend the ingredients together until the mixture becomes smooth and creamy. This step is crucial for incorporating air into the dough, which helps create the perfect texture for your Marshmallow Crispy Cookies.
Step 4: Add Egg and Vanilla
Crack in one large egg, ensuring it’s at room temperature for better mixing, along with 1 teaspoon of vanilla extract. Mix until fully combined, creating a rich batter that exudes warmth and sweetness. This blend enhances the overall flavor profile of your cookies, making every bite divine.
Step 5: Incorporate Dry Ingredients
Gradually add in ½ teaspoon of baking soda, ¼ teaspoon of salt, and 1 ½ cups of all-purpose flour to the wet mixture. Stir gently with a spatula or wooden spoon just until the dry ingredients are incorporated. Be careful not to over-mix, as this can lead to tough cookies instead of the soft, chewy Marshmallow Crispy Cookies you desire.
Step 6: Fold in Crispy Cereal and Marshmallows
Now it’s time to add in 3 cups of Rice Krispie cereal and your previously frozen mini marshmallows. Using a folding motion, combine until everything is evenly mixed, creating a delightful contrast of textures. You want to see the crispy cereal fluffing up amidst the gooey marshmallows, promising a tantalizing cookie experience.
Step 7: Scoop the Dough
Using a large cookie scoop or a tablespoon, drop heaping portions of dough, about 3 tablespoons each, onto the prepared baking sheet. Be sure to space them about 2 inches apart, as the cookies will spread a little while baking. This spacing ensures each Marshmallow Crispy Cookie gets the perfect amount of heat and bakes evenly.
Step 8: Bake the Cookies
Slide the baking sheet into the preheated oven and bake for 10–13 minutes. Keep an eye on them—you’re looking for a light golden edge while the centers remain soft. Avoid overbaking to maintain that chewy texture that defines these wonderful cookies. The aroma wafting through your kitchen will be irresistible!
Step 9: Cool and Garnish
Once baked, remove the cookies from the oven and let them cool on the sheet for about 5 minutes. Then, sprinkle a pinch of flaked salt on top to enhance their sweetness. Finally, transfer the cookies to a wire rack to cool completely, allowing them to set to perfection before indulging in your delightful Marshmallow Crispy Cookies.

What to Serve with Marshmallow Crispy Cookies
Looking to create a magical dessert spread that complements your delightful cookies?
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Milkshake Madness: A creamy vanilla or chocolate milkshake perfectly balances the crispy and chewy textures of the cookies, making each bite even more enjoyable.
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Fruity Sorbet: Refresh your palate with a scoop of lemon or raspberry sorbet, adding a burst of fruity flavor that brightens the sweetness of the cookies.
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Fresh Fruit Platter: Serve a medley of bright, fresh fruits like strawberries, grapes, and apples for a refreshing contrast to the rich flavor of the cookies.
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Rich Hot Chocolate: Indulge in a cup of rich hot chocolate topped with whipped cream; the warmth and creaminess beautifully complement the sweet, gooey cookies.
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Chocolate Dipping Sauce: For a twist, serve a warm chocolate dipping sauce alongside the cookies, enticing with a sweet, dreamy experience.
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Ice Cream Sandwiches: Create fun ice cream sandwiches by sandwiching your cookies around a scoop of your favorite ice cream. This delightful treat is sure to delight any crowd!
How to Store and Freeze Marshmallow Crispy Cookies
Room Temperature: Store cookies in an airtight container at room temperature for up to 2-3 days to maintain freshness and texture.
Fridge: If you prefer a firmer cookie, refrigerate them for up to a week. Ensure they are sealed well to avoid drying out.
Freezer: For long-term storage, freeze individual cookies in a single layer, then transfer to a freezer-safe bag for up to 2-3 months. Thaw at room temperature before enjoying.
Reheating: To enjoy your cookies warm, reheat in the microwave for 10-15 seconds or briefly in the oven at 350°F (175°C) until warmed through.
Make Ahead Options
These Marshmallow Crispy Cookies are fantastic for meal prep, allowing you to enjoy a delicious treat throughout the week! You can prepare the cookie dough up to 24 hours in advance; just store it tightly covered in the refrigerator. If you’re really looking to save time, you can freeze pre-scooped dough balls for up to 3 months. To maintain their chewy goodness, ensure the mini marshmallows are frozen before mixing, which helps them keep their shape during baking. When you’re ready to bake, simply place the frozen dough on a baking sheet and add an extra minute or two to the baking time. With this method, you’ll have homemade cookies fresh out of the oven with minimal effort!
Expert Tips for Marshmallow Crispy Cookies
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Butter Browning: Always stir continuously while browning butter to prevent it from burning; burnt butter can ruin your cookies.
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Dough Thickness: For thicker cookies, add an extra 2 tablespoons of flour; this will help them hold their shape better.
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Preventing Spread: If your cookies spread too much, chill the dough for about an hour before baking. This helps them maintain their size.
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Rice Cereal Choice: Use regular-sized Rice Krispies for the best texture; off-brand or larger cereals can lead to undesired results.
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Marshmallow Tips: Freeze mini marshmallows before adding them to the dough to ensure they hold their shape while baking, creating that gooey center.
Marshmallow Crispy Cookies Variations
Feel free to explore these delightful variations that will elevate your Marshmallow Crispy Cookies to new heights!
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Chocolate Chip: Swap mini marshmallows for chocolate chips or add both for a sweet surprise. The combination of chewy marshmallows and rich chocolate creates a dreamy flavor fusion.
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Butterscotch Boost: Toss in butterscotch chips for a delicious twist. They’ll add a buttery sweetness that pairs wonderfully with the caramel notes in the brown butter.
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Coconut Delight: Mix in shredded coconut for a tropical flair. Coconut’s chewiness complements the marshmallows beautifully, crafting a cookie that’s both unique and scrumptious.
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Nutty Crunch: Add chopped nuts like pecans or walnuts for extra texture. The crunch of the nuts against the gooey marshmallow creates a satisfying bite—especially delicious for nut lovers!
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Dairy-Free Option: Use vegan butter instead of regular butter to make this recipe dairy-free without compromising flavor. Now, everyone can enjoy these treats with ease!
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Spicy Kick: Introduce a pinch of cayenne or cinnamon for a hint of spice. This unexpected kick sparks curiosity and adventure in each delightful bite.
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Gluten-Free Twist: Substitute all-purpose flour with gluten-free flour blend for a safe and tasty treat. You’ll never miss the regular flour in this scrumptious cookie!
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S’mores Style: Fold in crushed graham crackers and chocolate chips for a s’mores-inspired cookie. This delightful amalgamation of flavors takes you back to cozy campfire nights.
With these variations, I hope you feel inspired to experiment! And for an equally delightful bake, check out my Valentine Ganache Cookies or our delightful Chocolate Oat Cookies. Happy baking!

Marshmallow Crispy Cookies Recipe FAQs
What type of butter should I use for this recipe?
I recommend using salted butter for a wonderful richness and flavor. However, if you prefer a slightly lighter taste, you can substitute it with 7 tablespoons of melted unsalted butter, which still works beautifully in the cookie dough.
How do I store my Marshmallow Crispy Cookies?
To keep your cookies fresh, store them in an airtight container at room temperature for up to 2-3 days. If you find they’re still around after that, you can refrigerate them for about a week, but make sure they’re well-sealed. This helps maintain their delightful texture!
Can I freeze Marshmallow Crispy Cookies?
Absolutely! Freezing is an excellent way to save your homemade cookies for later. I recommend placing individual cookies on a baking sheet in a single layer to freeze for a few hours. Once solid, transfer them to a freezer-safe bag or container. They can be stored for up to 2-3 months. When you’re ready to enjoy them, let them thaw at room temperature or reheat them in the microwave for a few seconds.
What should I do if my cookies spread too much while baking?
If your cookies tend to spread more than expected, don’t fret! You can remedy this by chilling the dough in the refrigerator for about an hour before scooping and baking. Cooling the dough helps solidify the butter, leading to thicker, chewier cookies!
Can I make these cookies gluten-free?
Yes! This recipe is very accommodating. You can substitute the all-purpose flour with an equal measure of gluten-free flour blend. Just make sure to check that all other ingredients, such as the rice cereal and marshmallows, are also labeled gluten-free to ensure a safe treat for everyone.
Are there any alternatives for mini marshmallows?
If mini marshmallows aren’t your preference, consider using chocolate chips or a mix of both. Butterscotch chips or coconut flakes also add a delightful flavor touch! Feel free to mix things up to create your unique twist on these Marshmallow Crispy Cookies.

Irresistible Marshmallow Crispy Cookies You’ll Love to Bake
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper. Freeze the mini marshmallows.
- In a medium saucepan, melt ½ cup of salted butter over medium heat until it turns golden brown.
- Combine the browned butter with ¾ cup of brown sugar and ¼ cup of granulated sugar until smooth and creamy.
- Add one large egg and 1 teaspoon of vanilla extract, mixing until fully combined.
- Gradually add ½ teaspoon of baking soda, ¼ teaspoon of salt, and 1½ cups of all-purpose flour, stirring gently.
- Fold in 3 cups of Rice Krispie cereal and the frozen mini marshmallows until evenly mixed.
- Drop heaping portions of dough, about 3 tablespoons each, onto the prepared baking sheet, spaced 2 inches apart.
- Bake for 10–13 minutes until light golden at the edges and soft in the center.
- Let them cool for 5 minutes, then sprinkle with flaked salt before transferring to a wire rack to cool completely.

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