The Best Oreo Dump Cake (So Easy and So Chocolatey!)

If you’re in the mood for something chocolatey, gooey, and ridiculously easy, this one is going to be right up your alley. It’s the kind of dessert I make when I want something impressive without spending forever in the kitchen. No complicated steps, no mixer, no fancy techniques. Just layer everything in the pan, pop it in the oven, and let it bake into something magical.

This recipe takes a handful of simple ingredients and turns them into pure comfort. You’ve got soft cookies on the bottom, creamy sweetness baked right into the middle, and a buttery chocolate topping that comes together perfectly in the oven. When you scoop into it while it’s still warm, it’s rich, melty, and completely irresistible. Add a scoop of vanilla ice cream on top and it’s even better.

It’s perfect for last-minute guests, potlucks, family movie night, or those evenings when you’re just craving something sweet and cozy. It feels indulgent but couldn’t be easier to throw together. And fair warning, it disappears fast, so you may want to claim your slice early.

Equipment

• 9×13-inch baking dish – This is the perfect size to give you those gooey layers and feed a crowd without everything spilling over.

• Nonstick cooking spray – A generous spray makes sure nothing sticks, because nobody wants to scrape chocolate cake out of the corners.

• Measuring cup – You’ll need this for the butter, and it just keeps things simple and accurate.

• Butter knife – Perfect for cutting the butter into small pieces and spreading them evenly over the top.

• Spatula – This helps smooth out the Cool Whip layer so everything bakes up nice and even.

• Can opener – For that sweetened condensed milk, which is basically the magic ingredient in this whole recipe.

• Oven mitts – Because that pan comes out hot and bubbly, and we’re not burning fingers for dessert.

Ingredients

• 20 Oreo Cookies – These create that soft, chocolatey base that soaks up all the creamy goodness while still giving you those classic cookie vibes in every bite.

• 14 ounces sweetened condensed milk – This is what makes the whole dessert rich, gooey, and perfectly sweet as it melts down into the cookies while baking.

• 8 ounces Cool Whip, thawed – It spreads into a smooth, fluffy layer that bakes into the dreamiest creamy middle.

• 15.25 oz. box of chocolate cake mix – This gets sprinkled right over the top and turns into a buttery, chocolatey crust without any mixing at all.

• 1/2 cup salted butter – Cut into small pieces and scattered on top, it melts into the cake mix and gives you that golden, slightly crisp finish that makes this dessert so irresistible.

Recipe Instructions

You can find a printable recipe card at the bottom of this post.

Step 1: Preheat the oven to 350°F and generously spray a 9×13-inch baking dish with nonstick cooking spray.

Step 2: Arrange the Oreo cookies in an even layer across the bottom of the prepared pan.

Step 3: Slowly pour the sweetened condensed milk over the Oreos, making sure they’re well coated.

Step 4: Spread the Cool Whip evenly over the top to create a smooth layer.

Step 5: Sprinkle the cake mix evenly over the Cool Whip without mixing it in.

Step 6: Cut the salted butter into small pieces and distribute them evenly across the cake mix.

Step 7: Bake for 36 to 38 minutes, then serve warm, ideally with a scoop of ice cream on top.

Serving & Storing

• Serve it warm if you can. That’s when it’s at its gooey, chocolatey best. The layers are soft and melty and basically begging for a scoop of vanilla ice cream on top.

• Let it rest for about 10 to 15 minutes before scooping. It helps everything set up just enough so you get nice spoonfuls instead of total lava flow.

• Top it your way. Ice cream is a classic, but a drizzle of chocolate sauce or a few extra crushed cookies on top never hurts.

• Store leftovers covered in the fridge. Just pop some plastic wrap or a lid over the pan and it’ll keep well for about 3 to 4 days.

• Reheat individual portions. A quick 20 to 30 seconds in the microwave brings back that warm, gooey texture like it just came out of the oven.

• You can freeze it, too. Wrap portions tightly and freeze for up to 2 months. Just thaw in the fridge and warm it up when you’re ready for another chocolate fix.

Variations & Substitutions

• Try different Oreo flavors. Golden Oreos, mint, peanut butter, even birthday cake would be so fun here. It completely changes the vibe without changing the method.

• Swap the cake mix. Chocolate fudge is rich and intense, but devil’s food makes it extra deep and dark, and even a cookies and cream cake mix would be amazing.

• Use homemade whipped cream. If you’d rather skip the tub, you can spread freshly whipped cream over the condensed milk layer instead. Just make sure it’s whipped nice and thick.

• Add chocolate chips. Sprinkle a handful over the cake mix before adding the butter for even more chocolate in every bite.

• Drizzle in some peanut butter. A few spoonfuls swirled over the top before baking gives it that chocolate-peanut butter combo that’s always a hit.

• Make it extra crunchy. Toss some chopped nuts on top for a little texture contrast against all that creamy goodness.

• Use unsalted butter if that’s what you have. It’ll still turn out delicious. Just add a tiny pinch of salt over the top if you want that sweet-and-salty balance.

Little Tricks That Make a Big Difference

• Don’t crush the Oreos. Keeping them whole gives you that soft, layered base instead of a muddy bottom.

• Pour the sweetened condensed milk slowly. Take your time so it coats all the cookies evenly and seeps into the gaps.

• Spread the Cool Whip gently. A light hand keeps the layers separate and helps everything bake up beautifully.

• Sprinkle the cake mix evenly. Try not to dump it all in one spot. An even layer means no dry patches after baking.

• Cut the butter into small, thin pieces. The smaller the pieces, the more evenly it melts over the cake mix.

• Cover any dry spots with butter. If you see a powdery patch before baking, just add a tiny extra piece of butter there.

• Let it rest before serving. Giving it 10 to 15 minutes helps it set just enough so you get perfect scoops.

What to Serve with Oreo Dump Cake

• Vanilla ice cream – This is the classic for a reason. That cold, creamy scoop melting into the warm chocolate layers is just perfection.

• Hot fudge sauce – If you want to take it over the top, a little drizzle of warm fudge makes it feel extra indulgent.

• Fresh strawberries or raspberries – The pop of freshness balances all that rich chocolate and makes the plate look pretty, too.

• Whipped cream – A fluffy cloud on top adds just the right lightness to every bite.

• Cold glass of milk – You can’t go wrong with milk and Oreos. It’s simple, nostalgic, and always hits the spot.

• Hot coffee – If you’re serving this after dinner, a strong cup of coffee pairs beautifully with all that sweetness.

• Chocolate milkshakes – If you’re going full dessert mode, this makes it feel like a full-on treat night.

FAQs

What is an Oreo dump cake?

An Oreo dump cake is an easy layered dessert made by placing Oreo cookies in a baking dish, topping them with sweetened condensed milk and whipped topping, then sprinkling dry cake mix and butter over the top before baking. There’s no mixing required, which is why it’s called a “dump” cake.

Do you have to mix the cake mix first?

Nope! The dry cake mix gets sprinkled right over the top without mixing it with eggs or oil. The butter melts into it while baking and creates a soft, buttery chocolate topping.

Can I make Oreo dump cake ahead of time?

Yes, you can bake it earlier in the day and store it covered in the fridge. When you’re ready to serve, just warm individual portions in the microwave for that fresh-from-the-oven texture.

How do you store Oreo dump cake?

Store leftovers covered in the refrigerator for up to 3 to 4 days. It reheats beautifully in the microwave.

Can you freeze Oreo dump cake?

Yes, you can freeze it. Wrap individual portions tightly and freeze for up to 2 months. Thaw in the fridge and reheat before serving.

Why is my dump cake powdery on top?

If you notice dry cake mix spots after baking, it usually means the butter didn’t fully cover that area. Make sure the butter pieces are evenly distributed across the top before baking.

Can I use different Oreo flavors?

Absolutely. Mint, peanut butter, golden, or seasonal Oreo flavors all work great and give the dessert a fun twist.

Can I use homemade whipped cream instead of Cool Whip?

Yes, just make sure it’s whipped to stiff peaks so it spreads easily and holds up during baking.

Do I need to crush the Oreos?

No, you keep them whole. They soften as they bake and create that rich, layered texture on the bottom.