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No-Bake Chewy Oreo Bars

No-Bake Chewy Oreo Bars are dessert bars that are made with a mixture of chopped Oreo cookies, mini marshmallows, and butter.

Course Dessert
Cuisine American
Keyword No-Bake Chewy Oreo Bars
Prep Time 10 minutes
Chilling Time 2 hours
Total Time 2 hours 10 minutes
Servings 9 large bars
Calories 312 kcal
Author Amanda Rettke--iambaker.net


  • 1 package (16 ounces) double stuffed Oreos, roughly chopped with ¼ cup reserved for topping
  • 1 bag (10.5 ounces) mini marshmallows
  • 4 tablespoons butter, room temperature


  1. Spray an 8x8-inch baking dish with nonstick cooking spray or line with parchment paper. Set aside.

  2. In a large microwave-safe bowl, combine marshmallows and butter.

  3. Melt the marshmallows and butter in the microwave in 30-second intervals, stirring in between, until melted (about 2 minutes).

  4. Add chopped Oreos (reserving ¼ cup for the topping) to the marshmallow mixture and stir.

  5. Pour mixture into the prepared 8x8-inch pan and press into the pan with a spatula. Top with reserved chopped Oreo cookies.

  6. Place pan in the refrigerator to set for at least 2 hours, up to overnight.