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Crumbl Oreo Sandwich Cookies

Delicious sandwich cookies with layers of Oreo flavor and a rich marshmallow filling, perfect for any occasion!
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Prep Time 15 minutes
Cook Time 12 minutes
Total Time 30 minutes
Servings: 24 servings
Course: Dessert, Snack
Cuisine: American
Calories: 220
Ingredients Method Notes

Ingredients
  

Cookie Ingredients
  • 1.5 cups Light packed brown sugar Use light brown sugar for the best flavor.
  • 1 cup Granulated sugar Regular granulated sugar.
  • 1 cup Powdered sugar For a smoother texture.
  • 1.5 cups Unsalted butter Make sure it's softened at room temperature.
  • 0.5 cup Salted or unsalted butter Both types can be used; keep butter soft.
  • 2 large Eggs Room temperature eggs for better mixing.
  • 1.33 tablespoons Vanilla extract Use pure vanilla extract for better flavor.
  • 7 oz Marshmallow fluff For filling.
  • 2 cups Oreo crumbs Crushed Oreos to be folded into the dough.
  • 2 tablespoons Oreos, crushed For topping or presentation.
Dry Ingredients
  • 3 cups All-purpose flour Regular flour can be substituted.
  • 1.5 teaspoons Baking soda For leavening.
  • 1.25 teaspoons Salt Enhances the flavor.
  • 1 cup Cocoa powder, black Gives a deep chocolate flavor.

Method
 

Preparation
  1. Preheat the oven to 350°F (175°C).
  2. In a large bowl, cream together the unsalted and salted butter, brown sugar, granulated sugar, and powdered sugar until smooth.
  3. Beat in the eggs, vanilla extract, and marshmallow fluff until well combined.
  4. In another bowl, whisk together the all-purpose flour, cocoa powder, baking soda, and salt.
  5. Gradually add the dry ingredients to the wet mixture, stirring until just combined.
  6. Gently fold in the Oreo crumbs for that signature flavor.
Baking
  1. Drop spoonfuls of dough onto a baking sheet, spacing them a couple of inches apart as they will spread.
  2. Bake for 10-12 minutes, or until the edges are set but the centers remain soft.
  3. Allow cookies to cool completely on a wire rack before assembling.
Assembly
  1. Once cooled, sandwich the cookies together with additional marshmallow fluff or frosting for an added touch of sweetness.

Notes

Store cookies in an airtight container at room temperature for up to five days. Freeze for longer storage, separating with parchment paper. Consider using flavored marshmallow fluff for variations.