Costco Marshmallow Crispy Cookies Copycat Recipe

5 from 1 vote

Costco Marshmallow Crispy Cookies Copycat Recipe

Chewy brown butter cookies packed with crispy rice cereal and gooey marshmallows, just like the viral Costco Marshmallow Crispy Cookies.

Prep Time20

Cook Time13

Total Time1 33

Course: Dessert

Cuisine: American

Servings: cookies

Ingredients

7 tbsp unsalted butter will brown down to ~85 g
2 tbsp shortening room temperature
1/3 cup light brown sugar packed
1/3 cup granulated sugar
1 large egg room temperature
1 egg yolk room temperature
1 tsp vanilla extract
1 & 3/4 cup all-purpose flour
1/2 tsp cornstarch
½ tsp baking soda
¼ tsp baking powder
½ tsp kosher salt
1 & 1/2 tbsp light corn syrup
2/3 cup mini marshmallows more to top the cookie with
1 &1/2 cup Rice Krispies cereal

US Customary - Metric

Instructions

Melt the butter in a light-colored saucepan over medium heat, stirring constantly. Watch for foaming, then golden brown bits at the bottom.
7 tbsp unsalted butter
Pour into a heatproof bowl, scraping in all the browned bits. Cool until slightly thickened (~85 g).
Beat together browned butter, shortening, brown sugar, and granulated sugar for 2–3 minutes until light and fluffy.
2 tbsp shortening, 1/3 cup light brown sugar, 1/3 cup granulated sugar
Beat in corn syrup, egg, egg yolk, and vanilla until smooth and glossy.
1 large egg, 1 tsp vanilla extract, 1 & 1/2 tbsp light corn syrup, 1 egg yolk
In a separate bowl, whisk together flour, cornstarch, baking soda, baking powder, and salt. Gradually mix into wet ingredients until just combined.
1 & 3/4 cup all-purpose flour, 1/2 tsp cornstarch, ½ tsp baking soda, ¼ tsp baking powder, ½ tsp kosher salt
Gently fold in Rice Krispies, and marshmallows.
2/3 cup mini marshmallows, 1 &1/2 cup Rice Krispies cereal
Cover and chill 1 hour. This helps marshmallows not ooze too much and prevents excess spreading.
Preheat oven to 350F and line a baking sheet with parchment.
Scoop 3 Tbsp portions and space well apart. Bake 13-15 minutes until edges are golden but centers still slightly underbaked.
As soon as the cookies come out of the oven, use a larger cookie cutter than the size of the cookies to swirl them around so that they are a perfect circle and keep any marshmallow that could've oozed out inside
.Working quickly, take a few mini marshmallows, break them in half, and stick them on the hot cookies to give them that signature Costco cookie look.
Let cookies rest on the baking sheet for 10 min before transferring to a wire rack. Marshmallows will set as they cool.

Nutrition