Search Recipes

Find your favorite dishes

Marshmallow Crispy Cookies: Better-than-Costco Copycat Recipe

Olivia

By Olivia

Mar 9, 2026

15 min prep
30 min cook
12 servings
Jump to Recipe
Marshmallow Crispy Cookies: Better-than-Costco Copycat Recipe

Welcome to a delightful adventure in baking! Today, we're whipping up a batch of Marshmallow Crispy Cookies that are not just a treat for the taste buds but also a nostalgic journey back to those carefree childhood days. Imagine a chewy cookie, packed with crispy rice cereal and gooey marshmallows, all wrapped in a rich, buttery base. Trust me, these cookies are destined to become your new favorite indulgence!

Whether you’re reminiscing about those store-bought treats or looking for something special to impress your friends, these cookies will tick all the boxes. With a perfect blend of textures and flavors, every bite is a melt-in-your-mouth experience that will leave you craving more. Let’s dive into the world of these irresistible Marshmallow Crispy Cookies!

Why You'll Love This Recipe

  • Childhood Nostalgia: Each bite takes you back to simpler times with its delightful blend of marshmallows and crispy rice.
  • Chewy Yet Crunchy: The perfect combination of chewy cookie dough and crispy cereal for an enjoyable texture.
  • Easy to Make: With simple ingredients and straightforward steps, you'll have these cookies ready in no time!
  • Customizable: Add mini chocolate chips or experiment with different mix-ins to make them uniquely yours.

About the Ingredients

Browned Butter

This is the star ingredient that adds a rich, nutty flavor to your cookies. Browning the butter enhances its depth, making your cookies taste gourmet.

Light Brown Sugar

This sugar contributes moisture and a subtle caramel flavor that complements the cookies beautifully.

Granulated Sugar

It provides sweetness and helps achieve that perfect cookie texture by creating a slight crisp on the edges.

Large Egg

A room temperature egg binds the ingredients and adds richness to the dough, creating a tender cookie.

Vanilla Extract

This essential ingredient infuses the cookies with a warm and inviting aroma, enhancing the overall flavor profile.

Rice Krispies Cereal

These are the crunchy surprise hidden within the cookie, adding texture and a delightful crunch that contrasts with the softness of the dough.

Mini Marshmallows

These little bursts of sweetness melt slightly during baking, creating gooey pockets of marshmallow goodness in every bite.

Tips & Tricks

Chill the Dough

Letting the dough chill for at least 10 minutes after mixing helps enhance the flavors and prevents spreading during baking.

Don’t Overmix

When adding the dry ingredients, mix just until combined to keep your cookies tender and not tough.

Use Parchment Paper

Line your baking sheets with parchment paper to prevent sticking and ensure even baking.

Adjust Baking Time

Every oven is different; keep an eye on your cookies and remove them when the edges are golden but the centers look slightly underbaked.

Pro Tips

  • Let the Cookies Cool: Allow them to cool on the baking sheet for a few minutes before transferring them to a wire rack for the best texture.
  • Experiment with Mix-ins: Try adding nuts or dried fruit for a different flavor profile and added texture.
  • Make Ahead: You can prepare the dough ahead of time and refrigerate it for up to 3 days before baking.
  • Serve Warm: Enjoy these cookies warm for the ultimate gooey experience; the marshmallows will be extra melty!

Step-by-Step Instructions

Brown the Butter

Begin by melting the salted butter in a light-colored saucepan over medium heat. Stir continuously until it turns a beautiful golden color and releases a nutty aroma. Remove from heat and let it cool for about 10 minutes.

Make the Dough

In a mixing bowl, whisk together the cooled browned butter, light brown sugar, and granulated sugar until well combined. Add in the room temperature egg and pure vanilla extract, mixing until the mixture is smooth and glossy.

Add the Dry Ingredients

Gently fold in the all-purpose flour, baking soda, and sea salt, taking care not to overmix. You want to ensure there are no dry streaks but keep the dough slightly sticky.

Fold in the Good Stuff

Now it's time to add the Rice Krispies and mini marshmallows. Gently fold them into the dough, ensuring they are evenly distributed throughout.

Scoop & Bake

Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper. Scoop out 3-tablespoon-sized balls of dough and place them on the baking sheet. Bake for 10-13 minutes, or until the edges are golden and the centers are just set.

Delicious Variations

Chocolate Chip Delight

Add 1/4 cup of mini chocolate chips to the dough for a rich, sweet addition that pairs perfectly with marshmallows.

Nutty Crunch

Incorporate 1/2 cup of chopped nuts, such as walnuts or pecans, for an added crunch and a savory contrast to the sweetness.

Fruit Fusion

Mix in 1/4 cup of dried cranberries or cherries for a fruity twist that balances the rich flavors of the cookie.

How to Store Marshmallow Crispy Cookies

Refrigerator

Store baked cookies in an airtight container in the refrigerator for up to one week for optimal freshness.

Freezer

Freeze the cookies in a single layer on a baking sheet, then transfer to a zip-top bag for up to three months.

Reheating

To enjoy warm cookies, microwave them for about 10-15 seconds until heated through, keeping them soft and chewy.

Frequently Asked Questions

Can I use unsalted butter instead?

Yes, you can use unsalted butter; just add a pinch more salt to the dough to enhance the flavor.

How do I prevent cookies from spreading too much?

Chilling the dough before baking helps maintain their shape and prevents excessive spreading.

Can I make these cookies gluten-free?

Absolutely! Substitute all-purpose flour with a gluten-free flour blend for a delicious gluten-free version.

What’s the best way to store leftover cookies?

Keep them in an airtight container at room temperature for up to a week or in the fridge for longer freshness.

Now that you have all the secrets and tips to make your very own Marshmallow Crispy Cookies, it’s time to roll up your sleeves and get baking! Trust me, these cookies will be a hit whether it's a family gathering or a cozy night in. Enjoy every scrumptious bite!

Marshmallow Crispy Cookies: Better-than-Costco Copycat Recipe

Marshmallow Crispy Cookies: Better-than-Costco Copycat Recipe

Indulge in these irresistibly chewy Marshmallow Crispy Cookies, a delightful twist on the classic Rice Krispie treat, encased in a rich, buttery cookie that will have you reminiscing about childhood with every bite.

15 min
Prep Time
30 min
Cook Time
12
Servings
202 kcal
Calories

Ingredients

Instructions

  1. 1 Brown the Butter by melting the butter in a light-colored saucepan over medium heat, stirring continuously until it turns golden with a nutty aroma. Remove from heat and chill for about 10 minutes.
  2. 2 Make the Dough by whisking together the browned butter, brown sugar, and white sugar until combined. Add the egg and vanilla, mixing until smooth and glossy.
  3. 3 Add the Dry Ingredients by gently folding in the flour, baking soda, and salt until no dry streaks remain, being careful not to overmix.
  4. 4 Fold in the Good Stuff by adding Rice Krispies first, then mini marshmallows, ensuring the dough remains slightly sticky.
  5. 5 Scoop & Bake by preheating the oven to 350°F (175°C) and lining a baking sheet with parchment paper. Scoop 3-tablespoon-sized dough balls onto the tray and bake for 10-13 minutes, until edges are golden and centers are just set.

Chef's Note

Store cookies in an airtight container for up to 3 days. For thicker cookies, chill the dough for 30-60 minutes or add extra flour. These cookies are also freezer-friendly for up to 3 months.

Servings: 12

Cuisine: American

Course: Dessert

Nutrition (per serving): 2 gg protein