Marshmallow Crispy Cookies (Costco Copycat) Recipe

Introduction

These Marshmallow Crispy Cookies are a delightful Costco copycat treat, combining the chewy sweetness of marshmallows with a crispy crunch from rice krispies. They’re perfect for when you want a cookie that’s both fun and full of texture.

Ingredients

• ½ cup salted butter
• ¾ cup brown sugar
• ½ cup granulated sugar
• 1 large egg (room temperature)
• 1 teaspoon vanilla (vanilla paste recommended if available)
• ½ teaspoon baking soda
• ¾ teaspoon salt
• 1 cup all-purpose flour
• 1½ cups rice krispie cereal
• ⅔ cup mini marshmallows
• Flaked salt for topping

Instructions

1. Step 1: Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper.
2. Step 2: Brown the butter by melting ½ cup butter in a medium saucepan over medium heat. Continue cooking past the boiling point, stirring constantly, until it turns golden brown and smells nutty. Watch carefully as it can burn quickly. Remove from heat and pour into a bowl. Chill in the fridge or freezer for about 10 minutes to cool.
3. Step 3: In a medium mixing bowl, combine the cooled browned butter with both sugars. Add the egg and vanilla, mixing on low speed until smooth, about 30 seconds.
4. Step 4: Gradually add the salt, baking soda, and flour, mixing gently to avoid overworking the dough.
5. Step 5: Fold in the rice krispie cereal, then gently fold in the mini marshmallows.
6. Step 6: Scoop the dough into large balls using a 3 tablespoon cookie scoop. Place 4-5 cookies per baking sheet, leaving plenty of space as they will spread thin.
7. Step 7: Bake for 10-13 minutes, until the edges are lightly golden brown. Avoid overbaking to maintain a chewy center. Once out of the oven, sprinkle with flaked salt.

Tips & Variations

• Use vanilla paste instead of extract for a more intense vanilla flavor that enhances the overall taste.
• Be sure to watch the butter closely when browning to avoid burning, which can make the cookies taste bitter.
• For a fun twist, try mixing in some chocolate chips or chopped nuts along with the marshmallows.
• Chilling the dough briefly before baking can help control spreading for thicker cookies if preferred.

Storage

Store the cookies in an airtight container at room temperature for up to 3 days to keep them chewy and fresh. For longer storage, keep them in the refrigerator for up to a week. Reheat gently in the microwave for 10-15 seconds to soften marshmallows if desired.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

Can I use regular marshmallows instead of mini marshmallows?

Yes, you can chop regular marshmallows into smaller pieces and fold them in, but mini marshmallows distribute more evenly and melt nicely without creating large gooey pockets.

Why is the butter browned before making the cookie dough?

Browned butter adds a rich, nutty flavor that deepens the taste of the cookies, making them more complex and delicious compared to using melted butter alone.

Marshmallow Crispy Cookies (Costco Copycat) Recipe

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4.8 from 407 reviews

These Marshmallow Crispy Cookies are a delightful Costco copycat recipe featuring browned butter, crispy rice cereal, and gooey mini marshmallows. Perfectly chewy with a hint of caramelized flavor and a flaky salt topping, these cookies balance sweet and salty beautifully for a unique and addictive treat.

• Author: Emma
• Prep Time: 15 minutes
• Cook Time: 12 minutes
• Total Time: 27 minutes
• Yield: 12 large cookies 1x
• Category: Dessert
• Method: Baking
• Cuisine: American

Ingredients

Scale 1x2x3x

Wet Ingredients

• ½ cup salted butter
• 1 large egg (room temperature)
• 1 teaspoon vanilla extract or vanilla paste

Dry Ingredients

• ¾ cup brown sugar
• ½ cup granulated sugar
• ½ teaspoon baking soda
• ¾ teaspoon salt
• 1 cup all-purpose flour

Add-ins and Toppings

• 1½ cups rice krispie cereal
• ⅔ cup mini marshmallows
• Flaked salt for topping

Instructions

1. Preheat Oven: Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper to prevent sticking and for easier cleanup.
2. Brownbutter: In a medium saucepan over medium heat, melt ½ cup salted butter. Continue cooking past the point of melting and foaming until the butter turns a golden brown color and develops a nutty aroma. Stir constantly to prevent burning. Once browned, pour the butter into a bowl and chill in the refrigerator or freezer for about 10 minutes to cool.
3. Mix Butter and Sugars: In a medium mixing bowl, combine the cooled browned butter with ¾ cup brown sugar and ½ cup granulated sugar. Mix well until fully blended. Add the large egg and 1 teaspoon vanilla extract or paste and mix on low speed until smooth, about 30 seconds.
4. Add Dry Ingredients: Gradually incorporate ¾ teaspoon salt, ½ teaspoon baking soda, and 1 cup all-purpose flour into the wet mixture, stirring carefully to avoid over-mixing which can toughen the cookies.
5. Fold in Rice Krispies and Marshmallows: Gently fold in 1½ cups rice krispie cereal first to maintain their crispiness, then carefully fold in ⅔ cup mini marshmallows so they are distributed without melting.
6. Scoop Dough: Using a 3-tablespoon cookie scoop, portion the dough into large balls. Space about 4-5 dough balls per baking sheet as the cookies will spread thinly during baking.
7. Bake: Place the baking sheet in the preheated oven and bake the cookies for 10 to 13 minutes. Watch for a light golden brown color on the edges. Do not overbake in order to keep the chewy center.
8. Add Flaked Salt: Immediately after baking, sprinkle the warm cookies with flaked salt to enhance flavor contrasts and add a gourmet touch.

Notes

• Make sure to watch the butter carefully while browning to prevent burning, which will result in a bitter taste.
• Cooling the browned butter before adding to the sugar and egg mixture helps prevent cooking the egg prematurely.
• Do not overbake; the cookies should look slightly underdone in the middle for a chewy texture.
• The flaked salt adds a nice balance to the sweetness and enhances the overall flavor.
• Use parchment paper or a silicone baking mat to prevent sticking and ensure even baking.

Keywords: Marshmallow Cookies, Crispy Rice Cookies, Costco Copycat, Brown Butter Cookies, Chewy Cookies, Sweet and Salty Cookies