Slutty Brownies

Erm what diet…?

I was first introduced to these brownies by my lovely friend Sarah, who shares both my passion for cooking, and my love of eating. This sometimes gets us into trouble. A typical ‘Girls Night’ usually includes a bottle (or two) of Prosecco, several tubs of Ben & Jerry’s, and multiple bags of Cadbury chocolate. She’s such a bad influence…

I was, however very grateful for this introduction. The original idea was that of a blogger by the name of The Londoner (the woman is a culinary mastermind). The name comes from the fact that these brownies are oh so easy, and a good bit filthy. And boy are they easy. Now, I like to make life simpler at every opportunity. However, I’m a bit of a baking snob, and think the instant mixes you can buy from the supermarkets are a waste of money. Baking is generally not that difficult, and not actually a great deal more effort than these mixes require.

However. In the case of Slutty Brownies, much of the attraction to the recipe – apart from the promise of a truly decadent cookie/brownie combo – was the use of the instant mixes. The original recipe is a layer of cookie dough, a layer of Oreo cookies, and a layer of chocolate brownie. There’s no reason why you shouldn’t make the cookie and brownie from scratch. If that’s what you want to do, go for your life (I have a damn good cookie recipe, and an equally good brownie recipe on this blog). I just couldn’t be bothered. That’s a fair amount of work, and the whole allure of this slice is its simplicity.

This recipe has been added to a little – it was Sarah’s suggestion to add the caramel (see what I mean about a bad influence??). And I had a tub of Marshmallow Fluff so I had to throw that in for good measure. Feel free to leave these out if you’d rather (although why you would…?).


1 packet of cookie mix
1 packet of brownie mix
2 packets of Oreos (double stuffed are even better!)
1/2 tin of caramel
‘some’ marshmallow fluff
1-2 eggs

Slutty Brownies |

1. Preheat your oven to 170°C/325°F/Gas 3. Make up the cookie mix as per the packet instructions, but add a little more butter/oil (depending on make). About 5g/1tsp more will suffice, enough to keep the cookie moist as it is baked for longer.

Slutty Brownies |

Also add about 5ml more water. I used a 275g packet mix from Morrisons, to give you an idea of quantity.

Slutty Brownies |

2. Line an 8×8″ tin (or equivalent size) with greaseproof paper (i.e. place paper in the tin, nothing fancy).

Slutty Brownies |

3. Flatten the cookie dough into the tin with your hands. It’ll be quite thin, but that’s how it should be.

Slutty Brownies |

4. Arrange the Oreos on top of the cookie dough. Sixteen Oreos will fit perfectly in an 8×8″ tin, so requires 2 packets. If you just have one packet, space the biscuits out a bit more.

Slutty Brownies |

5. Splurge the caramel over the Oreos – I filled the holes between biscuits then spread over the top. Half a tin will be enough.

Slutty Brownies |


Slutty Brownies |

6. I then added dods of marshmallow fluff. This was pretty superfluous, you don’t need to. But I have a serious addiction to marshmallow, so this seemed like a good idea (and it was). It’s completely up to you though if you follow this.


Slutty Brownies |


Slutty Brownies |

7. In the same bowl as before (lets not make more washing up than we need to) make the brownies exactly as per the packet instructions – mine required 30ml of oil, 45ml of water and 1 egg).

Slutty Brownies |

Cover the caramel coated Oreos with the brownie mix, smooth it over and than pop this into your preheated oven for 30 minutes.

Slutty Brownies |

If at all possible, leave the brownie in the tin until it has completely cooled, then pop it in the fridge for at least an hour to firm up before trying to cut it. Alternatively you can just go at it with a spoon straight from the oven. Add some ice-cream and you have a winning dessert!

Slutty Brownies - ridiculously easy and unbelievably delicious, these Slutty Brownies need to be tried! |

The first time I made this I actually had to make half with caramel and half without. Have I mentioned the Husband’s weird dislike of caramel? Anyway, in my humble opinion the caramel takes it to a whole different level (thank you Sarah!).

Happy cooking!

Slutty Brownies - ridiculously easy and unbelievably delicious, these Slutty Brownies need to be tried! |








Author: Sarah Margetts

Busy mum of four, cooking up a storm.

2 thoughts on “Slutty Brownies”

  1. Love how you describe brownies as “a bit filthy” haha – your recipes have me drooling and hats off to you for doing all this and having triplets (and one extra) to look after!

Leave a Reply to Sarah Margetts Cancel reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: