Cookie Dough Oreo Brownies (2024)

These slu*tty brownies are the most over-the-top dessert you’ll ever try. They have a soft and chewy chocolate chip cookie base, a layer of Oreo cookies, and fudgy brownie on top! This recipe is 100% from scratch and definitely the most indulgent brownie recipe around. While I personally don’t love the name – these layered brownies have everything you could want in one dessert.

**This post was updated May 15, 2023 with new photos and a slightly updated recipe for easier baking**

I’ve been seeing photos of slu*tty brownies online for years. These decadent, super indulgent brownies were invented back in 2011 when Amanda from www.kevinandamanda.composted the original recipe. They solve the age-old debate of what’s better: chocolate chip cookies or brownies. Because brownies that combine chocolate chip cookies AND Oreo cookies are clearly the winner.

What Are slu*tty Brownies?

By definition, slu*tty brownies have:

1. A layer of chocolate chip cookie dough on the bottom
2. Oreo cookies in the middle – double stuffed, regular, you choose
3. Brownie on top

Why Are they Called slu*tty Brownies?

I learned from reading Amanda’s updated post that when she first invented the recipe they were called Cookie Dough Oreo Brownies. But it was the internet who ended up changing the name to slu*tty Brownies. I personally prefer the original name because I don’t think anyone deserves to be called “slu*tty” – and that includes my brownies. But hey, a brownie by any other name would taste just as sweet?

How to Make slu*tty Brownies

Today’s recipe is 100% from scratch. (Note that below I’m including step-by-step photos and recipe tips. If you want to get straight to the recipe with amounts and without all the details – feel free to scroll down).

You’ll start with the cookie dough layer:

1. In a large bowl, beat together the softened butter, brown sugar and granulated sugar until fluffy.
2. Then beat in the egg, additional egg yolk and vanilla extract. Note that you are not using 2 full eggs for the cookie dough layer. The extra egg yolk ensure a chewier cookie layer.
3. Then add in the flour, baking powder and salt. There’s very little baking powder in this recipe, because we want the cookie dough layer to be chewy and a little dense – more like the consistency of a brownie. Mix together starting with the mixer on a low speed to avoid the flour blowing everywhere.
4. Stir in the chocolate chips.

The cookie dough is then spooned into the prepared pan and smoothed into an even layer. Then add a layer of Oreos on top of the cookie dough and press them down lightly. I use 7 rows of 4 Oreos, plus extra cookies cut in half so that the entire pan is covered. You can, of course, also just use 7 rows of 4 cookies.

From there, you’ll make the brownie batter. This recipe is, again, from scratch and uses both melted dark chocolate (or semi-sweet) and cocoa powder for the perfect rich and fudgy chocolate flavor.

1. Add the butter and finely chopped chocolate to a heatproof bowl and melt together in the microwave using 45-second intervals on medium power. Stir between each interval and repeat the process until smooth. Note that it’s extremely important that you never melt chocolate on high power – which is often the default – or the chocolate can become grainy or burn.
2. Ensure that the batter isn’t hot, then whisk in the eggs, sugar and vanilla extract. It’s important the the melted butter and chocolate aren’t hot – otherwise they can actually cook the eggs.
3. Then you’ll whisk the the flour, cocoa and salt into the butter. If your cocoa and flour are lumpy, I recommend sifting the ingredients first to avoid overmixing the batter.

You’ll then spoon the brownie batter over the Oreo layer and spread it into an even layer. Pro Tip: if you just pour the brownie batter over the Oreo layer it can be harder to spread it into an even layer. Therefore, I recommend evenly spooning the batter over the Oreo layer and then spreading it into a smooth layer.

*Note that the bake time is long. These brownies are very thick – so they’ll need to bake for about 35-45 minutes depending on how gooey you like your brownies. Mine baked for 38 minutes. They’ll be done when an inserted toothpick comes out clean or with a few damp crumbs. If you give the pan a gentle nudge and you can see the middle of the brownies really wobbling – they aren’t done yet.

Pro Tip: Make sure to let the brownies cool fully before slicing. Otherwise, you’ll have a bit of a mess. They will need to cool for about 4 hours (minimum) for easy, clean slicing. Waiting for the brownies to cool is definitely the hardest part of making this recipe!

Pan Sizes

The recipe below is for a 9×13 inch pan. It can easily be halved and made in an 8×8. The bake time will be slightly shorter – about 32-37 minutes. Note that there is not quite enough batter to half the recipe and make it in a 9×9 inch (23×23 cm) pan.

**Because the cookie dough layer uses 1 large egg plus 1 additional egg yolk, when halving the recipe you can simply use 1 large egg. It won’t be exactly halved, but I found it still works.

And if you love these chocolate chip cookie Oreo brownies – why not try:

• Oreo Brownies
• Chocolate Chip Cookie Bars
• Peanut Butter slu*tty Brownies