Jaffa Cake Slutty Brownies

What do you get when you cross a slutty brownie and a Jaffa Cake? These utterly filthy specimens, that’s what. I mean, I dunno what on Earth I was thinking when I came up with this one but bloody hell am I proud of my self.  Jaffa Cake Slutty Brownies, stand up and take a bow. Your public awaits.

Chocolate Orange Jaffa Cake Slutty Brownies

For these saucy little buggers I replaced the traditional Oreo cookie with a Jaffa Cake. As if that wasn’t bad enough I also spooned globs of shredless marmalade (orange curd would work too) around the biscuits (not cake, biscuit. I will fight you) then topped it off with a chocolate orange brownie layer. Hot diggedy dawg!

Chocolate Orange Jaffa Cake Slutty Brownies

If you’re a chocolate orange fan, these bars are made for you. They certainly pack a zesty punch.

To create the fudgy texture of the brownie and ensure your fingers are nice and neat I’d recommend setting your brownies in the fridge overnight before cutting. If you’re not too bothered about presentation and just want to dig in, simply allow to cool for a few hours before cutting.

Chocolate Orange Jaffa Cake Slutty Brownies

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Jaffa Cake Slutty Brownies

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What do you get when you cross a slutty brownie and a Jaffa Cake? These utterly filthy specimens, that’s what.



For the cookie dough layer:

  • 225g unsalted butter, softened
  • 150g soft, light brown sugar
  • 200g caster sugar
  • 2 large, free range eggs
  • 1tsp vanilla extract
  • 350g plain flour
  • 150g plain chocolate chips
  • 15 Jaffa Cakes
  • 4tbsp shredless marmalade

For the Brownie layer:

  • 175g unsalted butter
  • 175g plain chocolate, chopped
  • 175g caster sugar
  • 3 large eggs
  • 100g plain flour
  • 1tsp orange extract


  1. Preheat oven to 170C and prepare a 9×13″ brownie tin, or use a disposable tray.
  2. For the cookie dough layer, cream together the butter and both sugars until light and fluffy. Add the eggs one at a time, mixing between each addition followed by the vanilla extract. Add the flour and mix until just combined, stir through the chocolate chips. Press the dough into your prepared pan in an even layer. Place the Jaffa Cakes on top of the cookie dough in rows of 3, press down slightly on each biscuit. Spoon little globs of marmalade between the Jaffa Cakes and spread out slightly with the back of your spoon. Set aside while you make the brownie layer.
  3. In a large saucepan over a low heat melt the butter and chocolate together. Add the sugar and stir together. Crack the eggs into a large jug and whisk, slowly pour the eggs into the chocolate mixing as you go. Add the flour and stir until the white streaks just disappear then quickly stir through the orange extract. Pour the brownie mixture over the cookie dough layer making sure everything is covered but your don’t over fill the tray. Bake for 35 minutes or until just set with a slight wobble.
  4. Allow to cool in the fridge over night before cutting into fingers and enjoying.
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Category: Baking
  • Cuisine: American


  1. HodgePodgeDays Blog
    January 13, 2018 / 9:36 am

    I love chocolate and orange as a combination – it's a classic! These look very interesting indeed.

  2. James Mac
    January 13, 2018 / 11:20 am

    haha you cannot go wrong with Jaffa cakes hehe they look very tasty:)

  3. Kara Guppy
    January 13, 2018 / 11:26 am

    Jaffa cakes are my downfall, I just cannot eat one and then end up inhaling the whole packet. I bet these taste amazing

  4. Chloe Borderick
    January 13, 2018 / 12:06 pm

    These look so, so good! I love jaffa cakes so I'll definitely be giving this a try soon!NINEGRANDSTUDENT: A Foodie Blog

  5. Sophie
    January 13, 2018 / 4:16 pm

    Oh my good god. These look incredible!SophiexA Story of a Girl

  6. Laura Hartley
    January 13, 2018 / 11:27 pm

    My boyfriend lovesss jaffa cakes – I should bake these for him as a surprise, he'd love them!

  7. Sheri
    January 14, 2018 / 8:27 am

    These look delicious, at first I was like what in the world are slutty brownies? LOL. I am a sweet tooth so this is perfect.

  8. Linda Hobbis
    January 14, 2018 / 1:16 pm

    These look delicious although the more sensitive might worry about 'slutty'.

  9. Charli B
    January 14, 2018 / 1:42 pm

    I make slutty brownies all the time but have never thought to make them with jaffa cakes, definitely going to be doing this with the kids over the weekend x

  10. Five Little Doves
    January 14, 2018 / 3:34 pm

    Oh my god. You literally just baked my dream dessert!! I so need to make these, although Im not sure mine would look quite as delicious!

  11. Our Fairytale Adventure
    January 14, 2018 / 7:12 pm

    These look delicious and quite easy to make. I'll have to try making them next week.

  12. Victoria
    January 14, 2018 / 9:45 pm

    I've not been a fan of Jaffa cakes for a few years now, after eating too many at Christmas one year and making myself sick! But these look great, so I might be able to eat them in a brownie x

  13. jillconyers
    January 15, 2018 / 2:22 pm

    Brownies are one of my all time favorite treats and my daughter's too. I've never heard of Jaffa cakes.

  14. AMummyToo
    January 15, 2018 / 5:26 pm

    Wow, these look amazing! Chocolate orange is one of the greatest combinations, I might have to give these a try.

  15. Chichi
    January 16, 2018 / 2:23 pm

    i love the taste of chocolate and orange together, can't wait to try!

  16. Rhian Westbury
    January 20, 2018 / 6:32 am

    Wow these sound incredible. I am a huge chocolate orange fan and a massive jaffa cake lover so it's like these were made for me x

  17. Stephanie
    May 12, 2020 / 9:53 am

    These look amazing!! Do you think it will work in a 9x9in tin? Also, do they freeze well?

    • May 12, 2020 / 7:31 pm

      Hi Stephanie,

      They should work in a 9×9 tin, just let them cook for a little longer as they’ll be deeper. You can also freeze them no problem 🙂

      Katie xoxo

  18. Holly
    March 1, 2021 / 8:53 pm

    How would you adjust the recipe for a 9×9 tin? Also is there a way to make the cookie dough chocolate?

    • March 3, 2021 / 3:05 pm

      Hi Holly,

      I’d try and stick with the correct tin size as I don’t know how you’d change it, halving it would be too small you see. You can get disposable aluminium trays of that size from most supermarkets for super cheap too 🙂

      If you want to make the cookie dough chocolate just remove 30g of the flour and replace with cocoa powder 🙂

      Let me know how you get on.

      Katie xoxo

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