Slutty Brownies

Happy Hump Day! I know I’ve posted about these slutty brownies before… but I just made a video to go along with them and thought it would be fun to share!

Happy brownie making :)

A few weeks ago I was perusing the interwebs, mainly pinterest, because it’s my latest obsession and I spend an inordinate amount of time pinning things that I want to eat, and things that I want at my wedding. I’m not quite sure how people planned weddings before Pinterest. It’s kinda the greatest invention of all times. But while I was knee deep in my wedding pinning extravaganza, I stumbled across something called Slutty Brownies.

Clearly these caught my attention immediately. They are the brilliant creation of The Londoner, who is just pretty much awesome. Basically it’s a super brownie made with layers of cookie dough, oreo cookies, and then a rich and decadent brownie layer. They are totally slutty brownies. Or I guess they could easily be “I just got dumped brownies.”

So basically after I found these I made them approximately 23 times. Okay so maybe it was 12 times, but the moral of the story is that these are just downright awesome. My fabulous friend Koko and I decided that these are best eaten by oneself, with a spoon, perhaps a glass of bubbly rose and some trashy TV (I recommend the Real Housewives of Beverly Hills or Shameless). They are decadent. One small bite will be enough to satisfy any sweet tooth.

You could easily make these with box mix, which is what the original recipe I found calls for, but I took it one step further and made these with my all time favorite rich chocolatly brownie recipe and my favorite chocolate chip cookie dough recipe. The oreo in the middle may seem slightly out of place because you might think it’s going to be this crunchy layer between two super soft and chewy layers, but let me reassure you that it’s not. The oreo kind of soaks up a bit of moisture from the brownie batter and cookie dough and just adds that extra bit of fabulousness.


So basically you’ve got to make these. They will change your life. The first 2 times I made these, I cut them right away to serve them and they kinda fell apart a bit since they were still crazy warm, and that’s totally one way to go. If you’re serving them fresh out of the oven, add a scoop of vanilla ice cream just for another layer of decadence and serve away. If you’re going to let them sit for a few hours, you’ll get a super gorgeous cut square and can grab it and go. Either way, they are awesome.

Slutty Brownies

Yield: 1 9x9 brownie pan

Serving Size: 16 brownies per recipe

Slutty Brownies


    For the Brownie layer:
  • 10 tbsp unsalted butter
  • 1 1/4 cups white sugar
  • 3/4 cup cocoa powder
  • 1/2 tsp salt
  • 2 tsp vanilla extract
  • 2 large eggs
  • 1/2 cup AP flour
  • For the Oreo layer:
  • 1 package of Oreo (regular stuffed or double stuffed)
  • For the Cookie Dough layer:
  • 1/2 cup unsalted butter (at room temp)
  • 1/4 cup brown sugar
  • 3/4 cup white sugar
  • 1 egg
  • 1 1/4 tsp vanilla extract
  • 1 1/4 cups AP flour
  • 1/2 tsp salt
  • 1/2 tsp baking soda
  • 1/2 tsp baking powder
  • 1 cup semi-sweet chocolate chips


  1. For the Brownie layer:
  2. In a medium sauce pan, melt the butter over medium high heat. Add the sugar and cocoa powder once the butter is melted. Whisk to combine and remove from heat. Add the salt, vanilla and eggs and continuously whisk until the eggs are combined. Add the flour and continue to mix. Set batter aside.
  3. For the Cookie Dough layer:
  4. Cream together the butter and sugars in a mixer. Add the eggs and vanilla, making sure to scrape down the sides of the mixing bowl. Add the flour, salt, baking soda and baking powder and mix on low until everything is incorporated. Fold in the chocolate chips. Set dough aside.
  5. Assembly:
  6. Pre-heat the oven to 350 degrees.
  7. Line the bottom of a 9x9 baking pan with tin foil and then spray the tin foil with a layer of baking spray.
  8. Layer the cookie dough on the bottom of a 9x9 baking pan, pressing down to form the bottom of the slutty brownies.
  9. Layer as many oreos that will fit on top of the cookie dough. No need to overlap. One single layer will do.
  10. Pour the brownie batter on top of the oreo layer and make sure it's evenly layers on top.
  11. Bake for 30-35 minutes. Test with a knife to see if the center is done. If the knife comes out clean, let the brownies rest before serving. If the knife comes out with batter still on it, allow the brownies to bake about 5 minutes more.
  12. Serve with ice cream :)


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  1. I have yet to make these… I plan to do so in approximately 2 hours. :) I’m extremely curious, for all of you with youngsters at home, do you keep the name of the brownie when telling them what they are? Do you tell your kids “Hey, would you like a slutty brownie?” or do you knock it down to a PG rating and just call them “cookie brownies” or some variation. The human interactions of this particularly sinful treat intrigues me. :)

  2. Hi Gaby!
    I found this on Pinterest and I want to make them today! They look sooooo good! I just have one question: to save time I’ll be using boxed brownie and cookie dough mixes, but how do I know how long to cook them for? Is it different when using a box mix? Or do I just look at how long the brownies take to cook and go by that?

    1. Hi Christina! The recipe baking time will be similar, but just keep an eye on them while they are in the oven so you don’t over bake them! I’d say they will take a bit longer as there is more brownie batter in a box mix that the recipe I have :)

      Let me know how you like them!

  3. Hi, I have one more question: can we use a glass pan if we don’t have a 9×9 brownie pan, or should we just go with an 8×8 brownie pan?

    1. I’d go with the 8×8 brownie pan – just because the glass pans tend to bake a little differently!

  4. Hi there,

    These look amazing! Cannot wait to make them. I don’t have a 9×9 pan. Can I use a 9×13 pan if I line it with extra cookie dough and use more oreos. Would I need to double the brownie recipe, too?


    1. You can use a bigger pan for sure – just be sure to bake them for a few minutes longer as it will take longer for the center to cook since it’s in a larger pan :)

      And yes, I’d double the brownie recipe!! Or you could make it times 1.5 and that would probably be perfect

  5. I’m going to make these tonight. But here’s the twist… I’m going to use peanut butter cookie dough instead! Peanut butter and chocolate were made for each other!

  6. Just thought I’d drop a little hint here that might help some of you who are like me with a decision you might consider having to make when making this.

    When you’re layering the brownies and you notice those little gaps between the Oreos, you might wonder what could go there. For that matter you might have wondered how delicious the brownies might be with Reese’s Cups instead of Oreos.

    Well… you don’t actually have to make a choice. Reese’s Miniature Cups fit perfectly in those gaps between the Oreos. Be warned though… you’ll want to have a cup of water handy to drink after eating such a creation. Especially if you like a side of Oreo ice cream with these 😉

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  8. Thanks for the reminder! I made these a couple of months ago and they were awesome, even if I got the oven temperature conversion wrong. I’m waiting for the weather to cool before trying them again, although I want to make the slutty blondie brownies. I haven’t seen golden Oreos in the UK, so I’m going to go with a British favourite, custard creams. I’ll let you know how I get on. I might also try another British favourite, Bourbon creams, instead of the Oreos.

  9. These are marvelous— super moist, deep chocolate flavor, and eye-catching. My only problem was serious overflow when using a 9×9″ dish. Good thing I put a cookie sheet under the baking dish. I plan to bake another batch this weekend, and I’ll use a larger baking pan this time. Are these brownies worth the effort? You bet, and when you fill your belly, you can just rub the rest directly on your thighs!

  10. These are so, so good. But just an FYI, they were NOT created by The Londoner. Bloggers Kevin & Amanda posted their recipe almost a full month before Rose posted her boxed mix version.

  11. I made these the other day and brought them to work everyone loved them, they came out good although i baked them in a 9X11 silicone pan instead of a 9×9 pan. I had no issues with them at all… will definatly use this recipe again

  12. Can these be made into individual portions by putting them into cupcake liners? If so, would the brownie pour down next to the oreo and create a brownie with a surprise inside?

    1. yes! that would totally work. Just watch the baking time as it will most likely be a bit shorter than a pan of them :) Also, I love that idea!

  13. Hi!
    I’m from Denmark – and that recipe – I LOVE IT!
    I am making the brownie today, but you write ‘cup’ a lot ind the start by how much you need for this brownie – I just need to know, witch size the cup is, or if theres any other way ..

    Sarah :)

  14. They do look amazing, and I will try them….. However, they don’t look slutty enough for me! (what does that say about me?). To me, slutty needs a layer of dripping, oozing something… either like a chocolate ganache, or a caramel/toffee type of layer. Do you smell what I am stepping in?!

  15. They do look amazing, and I will try them….. However, they don’t look slutty enough for me! (what does that say about me?). To me, slutty needs a layer of dripping, oozing something… either like a chocolate ganache, or a caramel/toffee type of layer. Do you smell what I am stepping in?!

  16. These are always my go to dessert now. To date, I have had 4 people ask me to marry them after taking the first bite.

  17. Can these be done with a 9×13 pan instead of a 9×9? I’m baking at a friends house, and I don’t believe they have a 9×9 available!

  18. I cheated when I made these, I used a boxed brownie mix and already made cookie dough. Came out great.

  19. Hi Gaby! I know this is an old post, but I had a question about the brownie layer of this recipe. I have tried to make this recipe before several times, and the brownies always come out undercooked. Always. I’ve cooked them over double the time stated on the recipe, and the brownies are still so gooey that the entire thing falls apart when I cut it, even after I’ve let it set. I used a 9×9 pan with a full boxed brownie mix – do you think that could be the problem?

    1. Hey Amanda!!

      The issue is in the brownie mix. The box mix makes a large quantity than what my recipe on here yields. If you want to cut the box mix in half, it should then work perfectly!! :) And continue to let it set, as that really helps!

      Keep me posted!

  20. They look Slutty and SEXY AT THE SAME TIME…..will be sharing this with the teachers I work with. Thanks and your very talented. love your stuff!

  21. Oh My God these brownies smell so good
    Mine r tasking longer to bake as we’ll
    Glad to know I’m not the only one
    Can’t wait to try

  22. I’ve made these for some time using box or pkg mixes. Cooking time is affected with that brownie mix and I have to watch so they don’t get hard. I drizzle sweetened condensed milk over the Oreos before topping wirh brownie mix for a caramel taste. We are a family of chocoholics so it’s a staple!!

  23. Hello! I found this recipe of yours and I want to recreate it! I have one question though, how did you cut the brownies to perfectly? Everytime I make brownies they always crumbles down. :(

  24. Made this brownies last night, and they were delicious. Thank you for all these delicious recipes.

  25. Gaby, I made these for my husband’s bday last week and we froze half of them so that we wouldn’t eat them all. I caught him eating them from the freezer this weekend…when you slice them frozen they have the consistency of fudge omg. Almost better than when they were just baked. Thanks for sharing!

  26. I’ve just got to ask this coz I’m a little worried… this is the first time I’m making this!
    Normally my brownies are always undercooked in the centre, so I leave them in the oven for about 10 more minutes (my family hates undercooked brownies).
    When I took the brownies out I stuck a knife in the centre and it came out with a bit of brown batter. I thought I’d better stick it back into the oven, so I did.
    This time, I realized that somehow I could see bubbling after the oven timer was done, and I took it out of the oven.
    Upon cutting, I realized the cookie layer was still super moist and looked a little like glutinous rice paste. I thought that the cookie layer would be firm and crunchy! Is this because I cut it too quickly after removing it from the oven (about an hour or so?) Does this mean the cookie layer was undercooked? The brownie layer’s been completely cooked and is a little crumbly (no undercooked brownie parts), so I’m a bit perplexed because I thought the cookie layer would cook that much faster than the brownie layer.
    Was there something I did wrong, perhaps? Hope you could help shed some light on the matter! (:

    1. Hi Hazel! Hmmmm I always let the brownies set for about 4-5 hours after baking because they are so dense – and then I cut them. It’s easy for them to fall apart when you cut them while they are still warm. What kind of baking pan did you use? LMK and I can help get to the bottom of this :)

  27. I just made these for the 1st time and they are amazing. I made them in a 9×13 pan and the only change I made was to use the new Oreo Thins. I didn’t want to double the recipe and by using the thins there was just enough brownie batter to cover. Of course they are not as thick as the 9×9 but still delicious. Can’t wait to share them with my friends!

  28. Hi there! I just made these last night (Tuesday) and will be sending them to my brother at college for him to receive them on Friday. Until they’re shipped tomorrow (Thursday) morning, how do you think they’d keep best? In the fridge? In the freezer? In a sealed container on the counter?

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