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+ servings
Close-up of a dark, gooey dessert topped with cookie crumbles and drizzle.

Oreo Dump Cake

Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
This Oreo Dump Cake combines chocolate sandwich cookies, sweetened condensed milk, whipped topping, cake mix, and butter into one rich, irresistible dessert—perfect for easy entertaining or a cozy night in.
12 Servings

Ingredients

  • 32 chocolate sandwich cookies with white filling e.g., Oreos
  • 1 14-ounce can sweetened condensed milk
  • 8 ounces frozen whipped dessert topping thawed
  • 1 package devil’s food or chocolate fudge cake mix standard 2-layer size
  • ¾ cup cold salted butter sliced into 24 even pats

Instructions
 

Prepare the Baking Dish

  1. Preheat the oven to 350°F (175°C). Coat a 3-quart baking dish with nonstick cooking spray or a light layer of butter.

Create the Cookie Base

  1. Arrange 24 whole chocolate sandwich cookies in a single, even layer across the bottom of the prepared baking dish.

Add Condensed Milk and Whipped Topping

  1. Evenly pour the sweetened condensed milk over the cookies. Spoon the thawed whipped topping over the milk layer and gently spread it out using a spatula to ensure full coverage.

Incorporate the Cake Mix and Crushed Cookies

  1. Sprinkle the dry cake mix evenly over the whipped topping. Coarsely chop or crush the remaining 8 cookies and scatter them evenly over the cake mix layer.

Top with Butter

  1. Distribute the slices of cold butter evenly across the top of the cake mix. Do not stir.

Bake the Cake

  1. Transfer the baking dish to the preheated oven and bake for 40 to 45 minutes, or until the top is set and golden brown and the edges are bubbling.

Serve

  1. Remove from the oven and allow the cake to rest for approximately 10 minutes. Serve warm as-is, or optionally topped with ice cream or additional whipped cream.

Notes

To make this dessert gluten-free, substitute the chocolate sandwich cookies and boxed cake mix with certified gluten-free alternatives. Many brands now offer gluten-free chocolate sandwich cookies that taste remarkably similar to the original, and gluten-free chocolate cake mixes are widely available in most grocery stores. Be sure to check all ingredient labels for cross-contamination if preparing for someone with celiac disease.
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