Marshmallow Crispy Cookies (Costco Copycat)
Indulge in the delightful taste of Marshmallow Crispy Cookies, a homemade treat that rivals even the best store-bought versions. Inspired by Costco’s famous cookies, these crispy yet chewy delights are infused with the rich flavor of brown butter and loaded with mini marshmallows and Rice Krispies for a satisfying crunch. Perfect for any occasion—whether you’re hosting a party, celebrating a special moment, or just looking for a sweet snack—these cookies are easy to whip up in under 40 minutes without any chilling time. Get ready to impress your family and friends with this simple yet irresistibly delicious recipe!
- Prep Time: 15 minutes
- Cook Time: 12 minutes
- Total Time: 27 minutes
- Yield: Approximately 24 cookies 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
Scale
- ½ cup salted butter
- ¾ cup brown sugar
- ½ cup granulated sugar
- 1 large egg (room temperature)
- 1 teaspoon vanilla extract
- ½ teaspoon baking soda
- ¾ teaspoon salt
- 1 cup + 2 tablespoons all-purpose flour
- 1½ cups Rice Krispie cereal
- ⅔ cup mini marshmallows
- Flaked salt for topping
Instructions
- Preheat your oven to 350°F and line a baking sheet with parchment paper.
- In a medium saucepan, melt the butter over medium heat until golden brown and nutty; cool slightly.
- In a mixing bowl, combine the cooled butter, brown sugar, granulated sugar, egg, and vanilla; mix until smooth.
- Gradually add baking soda, salt, and flour; mix gently until just combined.
- Fold in Rice Krispies and mini marshmallows.
- Scoop tablespoon-sized balls of dough onto the prepared baking sheet, spacing them about two inches apart.
- Bake for 10-13 minutes until edges are light golden; sprinkle with flaked salt immediately after removing from the oven.
Nutrition
- Serving Size: 1 cookie (30g)
- Calories: 130
- Sugar: 9g
- Sodium: 80mg
- Fat: 6g
- Saturated Fat: 4g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 17g
- Fiber: <1g
- Protein: 1g
- Cholesterol: 20mg