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A copycat Crumbl Oreo cookie sandwich on a white background with Oreo crumbs surrounding the cookie.
5 from 1 vote

Crumbl Oreo Sandwich Cookies

These giant Oreo Sandwich Cookies taste just like the ones from Crumbl, but BETTER! The cookie dough is rolled in crushed Oreos and features a mallow fluff filling that is absolutely amazing!
Prep Time: 20 mins
Cook Time: 9 mins
Total Time: 29 mins
Servings: 8 Oreo cookie sandwiches


Oreo Cookies

  • 1 1/2 cups butter - unsalted, softened to room temperature
  • 1 1/2 cups light brown sugar - packed
  • 1 cup granulated sugar
  • 2 large eggs
  • 1 tablespoon vanilla extract
  • 3 cups all purpose flour
  • 1 cup black cocoa powder
  • 2 cups Oreo crumbs - (about 18-19 Oreo cookies) finely crushed, divided
  • 1 1/2 teaspoon baking soda
  • 1 1/4 teaspoon salt

Mallow Filling

  • 2 tablespoons Oreos - crushed, but not as fine, can have some slight chunks
  • 1/2 cup butter - at room temperature, salted or unsalted
  • 1 cup powdered sugar
  • 1 teaspoon vanilla extract
  • 7 oz marshmallow fluff


  • Preheat oven to 375 °F.  Line a baking sheet with parchment paper or a baking mat, set aside.
  • In the bowl of a stand mixer fitted with a paddle attachment cream butter and sugars on medium speed for 2-3 minutes. Add eggs and vanilla and mix until combined. Scrape down the sides of the bowl as needed. Add flour, cocoa, 1 cup of Oreo crumbs, baking soda, and salt. Mix to combine. 
  •  Portion into 1/3 cup balls. Roll each ball in the remaining 1 cup of crushed Oreos. Place the Oreo covered balls on a parchment lined baking sheet. (6 per pan). Use the palm of your hand to press down on the cookie just slightly. 
  • Bake for 9-11 minutes or until the tops no longer appear shiny. Remove from oven and let cookies cool on pan for 10 minutes then transfer to wire rack to cool completely. 
  • Make the mallow filling: In a medium bowl beat the butter, vanilla, and powdered sugar until fully combined. Mix in the marshmallow fluff and crushed Oreos by hand with a rubber spatula. 
  • Scoop 2 T of mallow fluff onto one side of an Oreo cookie, then sandwich another cookie on top. You don’t want to overfill will the cream filling otherwise it will ooze out. You can chill the cream for 10 minutes to make it easier to scoop if you’d like. (I use a cookie scoop to portion the cream onto each Oreo sandwich cookie). Enjoy!


Marshmallow Cream: You can chill the cream to make it easier to scoop if you’d like. I use a cookie scoop to portion the cream onto each Oreo sandwich cookie. Don't overfill the cookies with the fluff or it will ooze out.
Don't flatten the cookies too much because you still want it to be thick. Just gently flatten it or else the cookies will be very tall.
If want to do open-faced cookies, you can pipe on the marshmallow fluff on top of the cookie. I love the sandwich cookies though, so that's my preference.
Storing: Cookies will last for 4-5 days in an airtight container stored at room temperature. They will last even longer if stored in the fridge.


Calories: 1219kcal (61%), Carbohydrates: 175g (58%), Protein: 12g (24%), Fat: 58g (89%), Saturated Fat: 33g (165%), Polyunsaturated Fat: 4g, Monounsaturated Fat: 17g, Trans Fat: 2g, Cholesterol: 169mg (56%), Sodium: 1208mg (50%), Potassium: 398mg (11%), Fiber: 6g (24%), Sugar: 113g (126%), Vitamin A: 1487IU (30%), Calcium: 86mg (9%), Iron: 8mg (44%)