Slutty Brownies!
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Chocolate chip cookie base, Oreos, and gooey chocolate brownie… all in one = slutty brownies!
Slutty brownies
This idea came about a good while ago, and personally I first saw the idea from Rosie Londoner. I remember making something similar once and posting it onto Instagram, and it was my most popular photo at the time reaching above 100 likes (which was like madness at the time) – but I don’t believe I ever posted the recipe.
I could be wrong in saying where they came from, but slutty brownies have become a bit of an iconic bake. To be fair, they are actually Oreo brookies, but the name slutty brownies is so well known for what the bake is now, that people just tend to stick to it!
With a thick chocolate chip cookie layer, oodles of Oreos, and then gooey chocolate brownies you have a bit of a winner. It’s basically everything that I love, in one. Baked together to form a gooey yet delicious layer of cookie, and Oreos, AND then gooey brownie.
Cookie layer
For me, the cookie layer came about from my Rolo cookie bars (and my others, but c’mon.. Rolos.), as I just love it. My original brookie post was quite different, but I have perfected these cookie bars so much that I’ve just completely changed it up to what it is now. Also, with a highly different method for baking with the brownies – freezing the cookie dough for a bit first.
It essentially is the same recipe as my Rolo cookie bars, just with a smidge less flour, and no Rolos. I felt like the cookies could get away with being a smidge softer in these, so it’s not too much of a contrast with the brownies themselves. You want the main biscuit part to come from the Oreos instead.
Oreo Layer
There are a few ways you could approach this layer, but I’m fully convinced that placing the Oreos on top of the cookie layer whole is the best way to do it. You could chop them up or blitz them in a food processor, but I’m honestly not sure it would give the same result. Leaving them whole creates a clear Oreo layer once sliced, which I absolutely love. You get that classic Oreo crunch, the creamy centre, and a really nice contrast between the cookie base and the brownie topping.
This layer is technically optional, but I waaaaaay prefer it with Oreos. It adds another texture, another flavour, and another reason these deserve their name. These are called slutty brownies after all, subtlety was never the goal here.
Brownie layer
For the brownies, it’s essentially the same recipe as my triple chocolate brownies, but halved. You don’t need a normal batch of brownies for these, as you already have the cookie and Oreo layers. Luckily, the recipe is quite easy to halve. I wouldn’t recommend baking this amount of brownie on its own though, as that probably wouldn’t taste so good.
- Chocolate – I love to use dark chocolate here. For me, dark chocolate is the only way to go when it comes to brownies as it keeps them rich rather than sickly.
- Butter – unsalted butter is best, but baking spread works if you need a dairy-free alternative.
- Eggs – two medium eggs give the brownies structure while keeping them soft and fudgy.
- Sugar – caster sugar is my go-to, but granulated or golden caster both work well.
- Flour – plain flour is all you need; the eggs provide the lift.
- Cocoa powder – quality really matters here for a deep chocolate flavour – I use this cocoa powder
- Chocolate chips – Milk or white chocolate chips add extra pockets of sweetness and texture.
Serve
I realise that the name – slutty brownies – is a bit much, but it’s meant in a way because they are ‘dirty’. All your favourite bits, gooey, and smushed together. They are indulgent, delicious, and INSANE when warmed up. Not going to lie, on several occasions when I have made these, I don’t want for them to cool properly first before eating them as they are just incredible.
Serve these as the are, or with ice cream, or cream or anything really! They really are just to die for – and are so moreish. Definitely not one for those who are trying to reduce their calorie content in general – but one of these isn’t going to kill you. They will be the ultimate treat. I hope you love them.
Tips & tricks
- I think it’s important to freeze the cookie dough, to help the brownies bake better. It is optional however! If you want, you can put the cookie layer into the fridge for an hour instead of the freezer for 20 minutes.
- The Oreos are optional, if you just want to make brookies then you can leave them out.
- The cookie layer is inspired by my cookie bars, and the brownie layer is inspired by my brownies. The general idea, is inspired my Rosie Londoner.
- These will last for 4-5 days easily, if not longer if they aren’t already eaten.
Slutty Brownies!
Ingredients
Cookie Layer
- 115 g unsalted butter
- 125 g light brown sugar
- 1 medium egg
- 1/2 tsp vanilla extract
- 225 g plain flour
- 1/2 tsp bicarbonate of soda
- 1/2 tsp salt
- 1 tbsp cornflour
- 150 g milk chocolate chips
Oreo Layer
- 20-25 Oreos
Brownie Layer
- 100 g dark chocolate
- 100 g unsalted butter
- 2 medium eggs
- 140 g caster sugar
- 50 g plain flour
- 25 g cocoa powder
- 150 g milk chocolate chips
Instructions
For the Cookie Layer
- Beat together your butter and sugar until light and fluffy!
- Add in the egg, and vanilla, and beat again until smooth.
- Adding the flour, bicarbonate, salt and cornflour and beat until a cookie dough is formed!
- Add in the chocolate chips, mix, and press into the bottom of a 9x9" square baking tin, lined with parchment paper.
- Freeze for 20 minutes!
For the Oreo Layer
- Preheat your oven to 180ºc / 160ºc fan
- Cover the layer of cookie, with Oreos. I keep mine whole, and just cover them!
For the Brownie Layer
- Melt together your dark chocolate with your butter until smooth.
- Whisk together the eggs and sugar into a thick mousse like mixture, and then fold through the melted chocolate mix.
- Add in the flour, and cocoa powder, and fold through again.
- Mix through the chocolate chips carefully, and then pour over the Oreo layer!
- Bake the slutty brownies in the over for 25-30 minutes, or until baked through. Sometimes can take a smidge longer!
- Leave to cool in your tin for 10 minutes, and then carefully remove and finish cooling on a wire rack.
- Cut up into your portions and enjoy!
Notes
- I think it's important to freeze the cookie dough, to help the brownies bake better. It is optional however! If you want, you can put the cookie layer into the fridge for an hour instead of the freezer for 20 minutes.
- The Oreos are optional, if you just want to make brookies then you can leave them out.
- The cookie layer is inspired by my cookie bars, and the brownie layer is inspired by my brownies. The general idea, is inspired my Rosie Londoner.
- These will last for 4-5 days easily, if not longer if they aren't already eaten.
I was so pleasantly surprised on trying this recipe! I thought maybe the three layers would make for a complicated bake but it was so simple to make and came out perfectly- looked exactly like the pictures. Think these will become a staple bake for me, also loved that there wasn’t a long list of complicated ingredients.
Hi
Is it possible to make half brookies and 1/2 slutty brookies? I’ve looked at both recipes and their slightly different?
Thank you
Yeah you can just use oreos on half!
Hey, these look amazing and I would like to try and make them and have them warm with some ice cream, could I heat them up at all or would I only be able to do it straight from the oven?
You can microwave them for example for 20 seconds or so per piece as you don’t want to keep re-heating the entire batch x
Hey! I always use your recipes and they’re perfect, but I have a big mixing bowl and I feel like doing half the usually volume of eggs and sugar in such a big bowl didn’t make it moussey enough!
I could sense it wasn’t thick enough (after over 5 minutes of whisking with an electric had whisk when for a normal brownie mix it takes about 3) but carried on anyway anyway and now it’s taken 45 minutes to bake 🙁 Have you got any tips?
What mixer do you use? I don’t usually have any problems with mine and I use a Kitchenaid – it won’t be the exact same as the quantities are less but it should still work! x
Hey Jane, my tray is 8 inch x 8inch, will the cooking time still be the same? Also does it matter how deep the tray is? Many thanks x
The depth of the tray doesn’t matter as long as it’s deep enough to contain the ingredients – but the time will increase due to the smaller tin!
Hello! I seem to be having the same problem as a few people. My brownie layer just wont bake. It’s been 40 minutes. I used dark chocolate in the mixture. Any advice? xx
What exact dark chocolate did you use?
Hey!
This looks delicious and I really want to make these… But I’m vegan. Do you think swapping the egg for flaxseed will work or not? And the butter to vegan butter? Thank you Xx
Hey! Yes it should do! x
Hiya, this is such a silly question but is it 180C or 160C for a fan oven? Also I usually make my brownies with milk chocolate, but in this case would that make it much harder to bake properly?
Made many of your other recipes and they are amazing!
Hiya – I really really recommend the dark chocolate for the brownie base. And I usually bake mine at 160C fan, but 180C can work too as long as your oven doesn’t run too hot! x
Tried this for the first time and it’s a bit! I’ve doubled the recipe thinking we will eat it all but wonder if I can freeze the baked brownie and microwave when we want to eat it?
Hey! Yes you definitely can – I always have a brownie supply in my freezer!!
Hi Jane! This looks amazing. I wondered if I’d be able to swap the Oreos or just leave them out and have Rolo brownies with a cookie base? Would that work or would the rolos mean they may not cook properly?
Thank you!!!
Hey! So you can swap the oreos for other biscuits easily, or leave the amount! Rolo’s can definitely change baking time, but should work okay if frozen solid first! x
Made these this afternoon and they taste fab, only comment is that the cookie section has more of a cakey texture than cookie? I froze as per instructions is there something that could of caused this or is this how they should be?
It may be slightly over baked xx
Hi Jane. I made your triple chocolate brownies, which were amazing, and now want to try these. In the recipe only milk choc chips are mentioned, but in the pictures it looks like white are used as well. I might just be being thick! Would you use white or just stick to milk? Thanks!
Hey! Sorry I’ve made these a few times haha – you can use either/any! In the cookie bit I did just use milk, but brownies I think I used a mix! (The oreo filling has made it look a bit like white chocolate on the bottom) x
Hi Jane,
Love your recipes! When you say bake through, should a knife be clean? I always worry if I will over bake or under bake. I know they cook more when they are in the tin but worried I take them out too early. Sometimes I don’t know if things are raw or just super gooey. Any tips you could provide would be fab
Thanks so much 🙂 x
Hey! So typically the skewer test doesn’t work the best with traybakes. Because there are things inside side as the oreos, chocolate chips it can mean it may always look dirty! I usually say a small wobble in the middle, and then maybe a skewer with a few crumbs, but nothing major!
Once cooked, can the brookies be frozen and defrosted to eat another day?
Would you suggest cooking from frozen or defrost overnight?
Thank you
Hey! Yes you can definitely freeze them – they just need thawing, they don’t need baking again! x