Introduction

This Oreo Dump Cake is a simple, no-fuss dessert that combines the classic flavor of Oreos with chocolate cake and creamy layers. It’s perfect for when you want a crowd-pleasing treat without spending hours in the kitchen.

A clear rectangular glass baking dish is filled with a base layer of pale yellow batter with a smooth texture. Inside the dish, two neat rows of chocolate sandwich cookies with white cream center stand upright, partially embedded in the batter. A woman's hand is pouring more of the same yellow batter over the cookies from a clear glass bowl, the batter flowing thickly and covering parts of the cookies. The background surface is a white marbled texture with soft natural light. photo taken with an iphone --ar 4:5 --v 7

Ingredients

20 Oreo cookies
14 ounces sweetened condensed milk (1 14-ounce can)
1 8-ounce container Cool Whip, thawed for about 15 minutes
1 box chocolate cake mix
¾ cup butter (1 ½ sticks or 12 tablespoons), cut into pats

Instructions

Step 1: Preheat your oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish with butter or non-stick cooking spray.
Step 2: Arrange 20 Oreo cookies in two even layers across the bottom of the prepared baking dish.
Step 3: Pour the sweetened condensed milk evenly over the Oreo cookies.
Step 4: Spread the thawed Cool Whip evenly over the layer of sweetened condensed milk using a spatula.
Step 5: Sprinkle the chocolate cake mix evenly over the Cool Whip layer. Use a fork to gently break up any lumps in the cake mix.
Step 6: Distribute the butter pats evenly over the surface of the cake mix without mixing them in.
Step 7: Bake in the preheated oven for 40 to 45 minutes until the top is golden and bubbly.
Step 8: Remove from the oven and allow the cake to cool slightly before serving.

Tips & Variations

Use a chocolate or vanilla cake mix depending on your flavor preference.
For a richer taste, substitute half the Cool Whip with cream cheese whipped until smooth.
If you prefer smaller Oreo pieces, roughly chop the cookies before layering.
To add a crunch, sprinkle chopped nuts or chocolate chips on top before baking.

Storage

Store leftover Oreo Dump Cake in an airtight container in the refrigerator for up to 4 days. Reheat individual portions in the microwave for 20 to 30 seconds if desired, or enjoy chilled for a cooler dessert.

How to Serve

A glass baking dish filled with a thick, rich chocolate brownie base as the bottom layer, dark brown with a slightly cracked texture. On top, there are broken pieces of chocolate sandwich cookies scattered unevenly, showing their black cookie parts and white creamy centers. The dish rests on a white marbled surface with a soft cloth in the background. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use another type of cookie instead of Oreos?

Yes, you can substitute Oreos with any sandwich cookie or other favorite cookies, though the flavor and texture may vary slightly.

Do I need to refrigerate this cake after baking?

It’s best to refrigerate the cake after it cools, especially because it contains Cool Whip and sweetened condensed milk, which benefit from staying chilled.

Oreo Dump Cake Recipe

Print Recipe

★★★★★

4.9 from 123 reviews

This Oreo Dump Cake is a quick and delightfully indulgent dessert that layers Oreos, sweetened condensed milk, Cool Whip, chocolate cake mix, and butter for a rich, fudgy treat. With minimal prep and simple ingredients, it bakes into a gooey, chocolatey cake that’s perfect for any occasion.

Author: Stella
Prep Time: 10 minutes
Cook Time: 40-45 minutes
Total Time: 50-55 minutes
Yield: 12 servings 1x
Category: Dessert
Method: Baking
Cuisine: American

Ingredients

Scale

Cookies

20 Oreo cookies

Dairy and Sweeteners

14 ounces sweetened condensed milk (1 14-ounce can)
1 8-ounce container Cool Whip, thawed for about 15 minutes
¾ cup butter (1 ½ sticks or 12 tablespoons), cut into pats

Dry Ingredients

1 box chocolate cake mix

Instructions

Prep the Oven and Dish: Preheat your oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish with butter or non-stick cooking spray to prevent sticking.
Layer Oreos: Arrange two layers of 10 Oreo cookies each evenly across the bottom of the prepared baking dish to form the base of your dump cake.
Add Sweetened Condensed Milk: Pour the entire 14 ounces of sweetened condensed milk evenly over the Oreo cookies to add sweetness and moisture.
Spread Cool Whip: Using a spatula, spread the thawed 8 ounces of Cool Whip evenly over the sweetened condensed milk layer for a creamy texture.
Sprinkle Cake Mix: Evenly sprinkle the dry chocolate cake mix over the Cool Whip layer. Use a fork to gently rake and break up any lumps to ensure even coverage.
Top with Butter: Slice the ¾ cup of butter into tablespoon-sized pieces and evenly distribute them across the surface of the cake mix, covering as much area as possible without mixing.
Bake: Bake the assembled cake in the preheated oven for 40-45 minutes until the top is bubbly and golden around the edges.
Cool and Serve: Remove the cake from the oven and allow it to cool slightly before serving to let the layers set and make it easier to cut.

Notes

Make sure the Cool Whip is thawed before spreading for an even layer.
Cutting the butter into small pats helps it melt evenly throughout the cake while baking.
Do not stir or mix layers once assembled to maintain the distinct textures and layering of the dump cake.
The cake will be very rich and fudgy—perfect served with a scoop of vanilla ice cream.
You can substitute chocolate sandwich cookies if Oreos are unavailable.

Keywords: Oreo dump cake, easy dessert, chocolate dump cake, no mixer cake, layered dessert