Name: Oreo Dump Cake Recipe
Prep time: 10 min
Cook time: PT-488365H1M1S
Total time: 55 min
Cuisine: American
Ingredients: 20 Oreo cookies; 14 oz sweetened condensed milk; 8 oz Cool Whip, thawed; 1 box chocolate cake mix (dry); ¾ cup butter (cut into pats)

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Oreo Dump Cake is one of those go-to desserts I turn to when I want something rich, sweet, and easy to make. With layers of crushed Oreos, creamy condensed milk, fluffy whipped topping, and a decadent chocolate cake mix, this cake bakes into a warm, gooey delight. The best part? It takes just a few minutes to throw together before baking. I first served this cake at a family gathering, and it disappeared in minutes!

Oreo Dump Cake Recipe

Why You’ll Love This Recipe

I love this Oreo Dump Cake for so many reasons:

It’s incredibly easy—no mixing bowls or mixers needed.
The layers melt together into a rich and indulgent dessert.
I can easily switch up the flavors with different Oreos or cake mixes.
It’s a guaranteed crowd-pleaser, perfect for holidays, birthdays, or just because.
I don’t have to fuss over frosting or decorating.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

20 Oreo cookies
14 ounces of sweetened condensed milk
1 8-ounce container of Cool Whip, thawed
1 box of chocolate cake mix
¾ cup of butter (cut into 12 or more pats)

Directions

Preheat and prep: I start by preheating the oven to 350°F (175°C) and greasing a 9×13 baking dish.
Layer Oreos: I lay down two rows of 10 Oreo cookies across the bottom of the dish.
Add condensed milk and Cool Whip: I pour the sweetened condensed milk evenly over the cookies, then gently spread the Cool Whip over the top with a spatula.
Sprinkle cake mix: I sprinkle the dry chocolate cake mix evenly over the Cool Whip layer, using a fork to break up any clumps.
Top with butter: I slice the butter into small pieces and scatter them over the top, trying to cover as much of the surface as possible. I don’t stir the layers.
Bake: I bake the cake for 40–45 minutes, until the top looks set and slightly crisp. I let it cool a bit before digging in.

Servings and timing

This recipe yields about 12 servings.
Prep time: 10 minutes
Cook time: 40–45 minutes
Total time: About 55 minutes

Variations

I like changing things up depending on the occasion or my mood. Here are some twists I’ve tried:

Mint Oreo version: I use Mint Oreos for a cool, refreshing flavor.
Peanut butter lover’s version: I sprinkle peanut butter chips over the cake mix before adding the butter.
S’mores style: I toss in some mini marshmallows and crushed graham crackers for that classic campfire flavor.
White chocolate twist: I swap the chocolate cake mix for white or vanilla cake mix and add white chocolate chips.
Red velvet version: I use red velvet cake mix for a festive, vibrant treat.

Storage/Reheating

When I have leftovers (which isn’t often!), I store them like this:

Refrigerate: I cover the dish with plastic wrap or transfer the cake to an airtight container. It stays fresh for up to 3 days in the fridge.
Reheat: I microwave a single serving for 20–30 seconds until warm and gooey again.

FAQs

How do I know when the dump cake is done?

I look for a lightly crisped top and bubbling edges. The center should be set but still soft. If it’s too jiggly, I let it bake another 5 minutes.

Can I use a different type of cake mix?

Absolutely. I’ve used vanilla, red velvet, and even funfetti cake mix. Each one brings a different twist to the flavor.

Do I need to crush the Oreos?

Nope! I leave them whole, which gives a nice texture contrast. But if I want a more uniform cake texture, I’ll crush them slightly.

Can I make this ahead of time?

Yes! I often bake it a few hours ahead and serve it warm or at room temperature. I just store it covered and reheat portions as needed.

Can I freeze Oreo Dump Cake?

Yes, I can. I wrap it tightly or store it in a freezer-safe container. It freezes well for up to 2 months. I reheat it in the microwave or oven before serving.

Conclusion

Oreo Dump Cake is my ultimate easy dessert when I want to treat myself and others without spending hours in the kitchen. With minimal ingredients and no-fuss steps, it comes together fast and always tastes like a slice of indulgence. Whether I’m baking it for a celebration or just a casual night in, this cake never disappoints. I hope you enjoy making it as much as I do!