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Copycat Costco Marshmallow Crispy Cookies

Copycat Costco Marshmallow Crispy Cookies

These Copycat Costco Marshmallow Crispy Cookies combine gooey marshmallows with crispy rice cereal and a rich caramel base, creating sweet and crunchy bars perfect for snacks, parties, or any occasion. Easy to make with pantry staples, this recipe replicates the iconic Costco flavor and texture right in your kitchen.

  • Total Time: 20 minutes
  • Yield: 12-16 bars 1x

Ingredients

Scale

Main Ingredients

  • 6 cups rice cereal (plain, crispy)
  • 4 cups mini marshmallows
  • 1/2 cup unsalted butter (1 stick)
  • 1 cup packed brown sugar
  • 1/2 teaspoon salt
  • 2 teaspoons vanilla extract

Instructions

  1. Melt the Butter and Sugar: Melt the unsalted butter over low heat in a large saucepan. Stir in the brown sugar and salt, and cook gently until the mixture begins to bubble and the sugar dissolves completely, forming a rich caramel base.
  2. Add Mini Marshmallows: Remove the saucepan from the heat and immediately stir in the mini marshmallows. Mix until the marshmallows are partially melted and fully incorporated, creating a gooey texture.
  3. Mix in Vanilla and Cereal: Stir in the vanilla extract, then gently fold in the rice cereal, ensuring every piece is thoroughly coated with the marshmallow mixture.
  4. Shape and Cool: Transfer the sticky mixture onto a parchment-lined baking sheet. Use a buttered spatula or your hands to flatten and shape into even squares or rectangular bars. Allow to cool completely for the ideal chewy yet crunchy texture.

Notes

  • Use fresh marshmallows for the best melting and texture.
  • Fold the cereal gently to avoid crushing and maintain crispiness.
  • Shape the mixture while warm, as it hardens quickly.
  • For firmer bars, refrigerate for 20-30 minutes after shaping.
  • Always line your pan with parchment paper to prevent sticking and simplify cleanup.
  • Author: Lina
  • Prep Time: 10 minutes
  • Cook Time: 10 minutes
  • Category: Appetizers
  • Method: Baking
  • Cuisine: American
  • Diet: Gluten Free

Nutrition

  • Serving Size: 1 bar (approx. 1/16 of recipe)
  • Calories: 160
  • Sugar: 14g
  • Sodium: 100mg
  • Fat: 7g
  • Saturated Fat: 4g
  • Unsaturated Fat: 2g
  • Trans Fat: 0g
  • Carbohydrates: 22g
  • Fiber: 0.5g
  • Protein: 1g
  • Cholesterol: 15mg

Keywords: marshmallow crispy cookies, Costco copycat recipe, rice cereal cookies, chewy marshmallow bars, gluten free snack