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.
Hi I really want to try these, can I half the recipe to make a smaller batch ?
Thankyou
Half fits about a 7″ square, but its hard to half the egg for the cookie as you only use one, and the brownie mix is going to be quite hard too as it’s such a small amount! It’s worth a go, but I can’t guarantee its the best results x
Hi, If I made this in a cake tin instead of a square tin would I need to amend the baking time? I’m doing a work bake off and was thinking of doing this bake but make it look more like a cake. I’m not sure if it would work?
So square tins are about the same volume as a round that is one inch bigger… so this is a 9″ square, you would need a 10″ round for it to be the closest. Smaller tins will increase baking time and may make the middle more gooey! x
Hi Jane, thank you for the advice. It worked perfectly. Everyone loved it and I ended up winning the work bake off with this 👌🏻
Hi, I’ve only got a 8” square, would you recommend leaving out a portion of the mixture. These look perfect and would like very close to! Thank you
Typically its about 1/5 less so hard to do, you can reduce it if you want, or bake it as it is but they may be a little raw in the middle where it’s deeper x
Hi,
Can you use stork from a tub for this recipe (for either component)? Have made with butter before and they were amazing – but I have some stork to use up 🙂
Thanks in advance!
Yes you can for both!
So gorgeous! Family favourite
Hi Jane
Can you freeze the brownies?
Yes you can!
Hi I’ve made this today and it’s been a huge hit! Just wondering what else can I use instead of the Oreos? I love the cookie base x
You can basically use any biscuit!
Hi! I done everything correct apart from freeze the cookie for 20 mins! Will this affect the end result? Its currently in the oven now
It certainly can change how it bakes – it’s designed to stop the cookie over baking, and also make sure the layers stay separate.
Found your brill recipe page yesterday and I’ve just made a batch of these however I only had a 7×11 inch cake tin and they came out perfectly in 25 minutes. Also added a few chopped hazelnuts to the brownie layer 😋😋 will definitely be making my way through your yummy recipes, thanks Jane 😁👌
You are the queen of recipes!
Wow! Why have I only just discovered your blog!
These are absolutely incredible! My cookie layer went a tad cakey but I think that may be because I over baked them slightly, I had a bit of an oven mishap and put them in the oven for half an hour with only the light in the oven being on and not the actual oven being on 🙈
Ahh yes, it will just be over baked slightly – warm them in the microwave if you have one before eating and they should be fine! x
Hi Jane,
I am looking to bake this over the weekend and was just wondering if I could replace the Oreo layer with a spread such as Nutella or Biscoff?
If so and you think this would work, how much would you recommend using and would you just spread it on the cookie layer and then put the brownie on top?
Thanks in advance!
Yes so it should work, but sometimes can take longer to bake (I am doing a recipe for them soon) – but I would spread a layer onto the frozen cookie and then put the brownie on top! x
Hi Jane, Can I just use your regular cookie bar recipe as I have some terrys cookie bar dough left Thank you x
Yes you can – this is just reduced as you want a thinner layer x
I baked this recipe for the first time the other night and fed them to my family, they said they were amazing.
But I also have some family members that couldn’t enjoy them as they are vegan and I was just wondering if you have a vegan version for this recipe as I find your recipes are the easiest and most straight forward to follow.
Thank you 😊