Marshmallow Crispy Cookies (Costco Copycat) Recipe
These Marshmallow Crispy Cookies are a delightful Costco copycat recipe featuring browned butter, crispy rice cereal, and mini marshmallows for a chewy, sweet treat. The cookies combine the nuttiness of browned butter with the crunch of rice krispies and the gooey sweetness of marshmallows, finished with a sprinkle of flaked salt for a perfect balance of flavors.
- Prep Time: 15 minutes
- Cook Time: 12 minutes
- Total Time: 27 minutes
- Yield: 12 large cookies 1x
- Category: Dessert, Cookie
- Method: Baking
- Cuisine: American
Ingredients
Scale
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 + 2 tablespoons all-purpose flour
Add-ins
- 1½ cups rice krispie cereal
- ⅔ cup mini marshmallows
- Flaked salt for topping
Instructions
- Preheat the Oven: Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper to prevent sticking and ensure even baking.
- Brown the Butter: Melt ½ cup of salted butter in a medium saucepan over medium heat. Continue cooking, stirring often, until the butter turns golden brown and smells nutty. Watch carefully as it can quickly burn. Once browned, transfer the butter to a bowl and chill in the fridge or freezer for about 10 minutes until cooled.
- Mix Butter and Sugars: In a medium mixing bowl, combine the cooled browned butter with the brown and granulated sugars. Add the egg and vanilla extract. Mix on low speed until the mixture is smooth and cohesive, about 30 seconds.
- Add Dry Ingredients: Gradually incorporate the salt, baking soda, and flour into the wet mixture, mixing slowly to avoid overworking the dough which can make the cookies tough.
- Fold in Crispy and Marshmallows: Carefully fold in the rice krispie cereal followed by the mini marshmallows to keep their shape intact and maintain the cookie texture.
- Scoop the Dough: Using a 3 tablespoon cookie scoop, portion the dough into large balls and place 4 to 5 on the lined baking sheet, leaving enough space for spreading.
- Bake the Cookies: Bake in the preheated oven for 10-13 minutes until the edges turn a light golden brown. Be cautious not to overbake to preserve a chewy center.
- Finish with Flaked Salt: Immediately after removing the cookies from the oven, sprinkle them with flaked salt to enhance the flavors with a perfect salty contrast.
Notes
- Browning the butter adds a rich nutty flavor that significantly elevates the cookie’s taste.
- Use room temperature egg to ensure even mixing and proper texture.
- Do not overmix the dough once flour is added to keep cookies tender.
- Watch cookies closely in the last few minutes of baking to avoid drying out the chewy center.
- Flaked salt is optional but highly recommended for a delightful sweet-salty balance.
Keywords: Marshmallow crispy cookies, Costco copycat cookies, browned butter cookies, rice krispie cookies, chewy cookies, sweet and salty cookies
