Slutty Brownie Cake (Triple Layered!)

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If you follow along on snapchat (username: whatsgabycookin) you know that this day was coming. It was a long time in the making and it’s finally here! Slutty Brownie Cake. Buckle up friends, it’s go time.

Slutty Brownie Cake from www.whatsgabycooking.com (@whatsgabycookin)

It all started a few months back when Adam texted me this pic.

All that came with the sketch was the word BOOM. He gets me. I obviously was super excited with the idea and ran with it. I took my favorite layer cake recipe (the one we used for my birthday cake a few months back) and divided it into 3 bowls and then flavored each bowl to be reminiscent of slutty brownies. That means one cake layer tastes like chocolate chip cookies, one with oreos and one like a brownie. It’s basically heaven on earth and it’s seriously a show stopper.

Slutty Brownie Cake from www.whatsgabycooking.com (@whatsgabycookin)

Each layer gets some swiss buttercream in between to hold it all together and then a major ganache topping. In case it wasn’t decadent enough, we added some freshly baked cookies, brownies and then some oreos to the top for good measure. Because when you’re going for it… you might as well REALLY go for it!

Slutty Brownie Triple Layer Cake

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By:
Gaby Dalkin
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Servings:
0
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Ingredients

For the cake layers:

  • 4 cups cake flour
  • 2 teaspoons baking powder
  • 1 ½ teaspoon baking soda
  • 1 teaspoon salt
  • 1 cup butter room temp
  • 2 cups sugar
  • 1 tablespoon pure vanilla extract
  • 4 eggs
  • 2 cups buttermilk

For the Swiss Buttercream:

  • 2 ¼ cups sugar
  • 9 large egg whites
  • 1 teaspoon lemon juice
  • pinch of salt
  • 1 ¼ pounds butter room temp, cut into small pieces

Cookie Dough Layer

  • 1 tbsp molasess
  • 1/2 cup chocolate chips

Oreo Layer

  • 8 oreos crumbled

Brownie Layer

  • 1/3 cup dutch processed cocoa powder

Optional toppings

  • Brownies
  • Cookies
  • Oreos
  • 1-2 cups ganache

Instructions

  • Preheat oven to 350 degrees F. Butter and flour three 9-inch cake pans.
  • Whisk together the flour, baking powder, baking soda and salt.
  • In a electric mixer with the paddle attachment, beat the butter and sugar together for 3 minutes. Add eggs, one at a time, Beat in the vanilla. Reduce speed to low and add half the flour mixture. Add 1 cup of buttermilk and mix until combined. Add remaining flour mixture and beat. Add remaining buttermilk and beat. Remove from the mixer and finish mixing by hand if needed. Divide the batter into 3 bowls adding in the various mix-ins for each layer listed below. Once combined, transfer the dough into the prepped cake pans.
  • Bake until golden brown and done, about 30-35 minutes. Let cakes cool for a few minutes and then remove to a wire rack to cool completely.
  • Bring a few inches of water to a boil in a saucepan that can hold a standing mixer's bowl above the water. Whisk the sugar, the egg whites, lemon juice, and salt in the bowl by hand. Set the bowl above the boiling water and continue whisking until the mixture is hot to the touch and the sugar dissolves, about 1 to 2 minutes. Transfer the bowl to a standing mixer fitted with the whisk attachment and beat the egg whites at medium-high speed until they almost hold a stiff peak and are fully cooled, about 10 minutes. Beat in the butter, a little at a time, until the icing is smooth and spreadable.
  • To assemble the cake, place one layer of the cake on a cake stand. Spread a 1/2 inch layer of the Swiss Buttercream on top and carefully place the 2nd layer of cake on top. Repeat the process with additional Swiss Buttercream. Add the last layer of cake of top. Frost the top of the cake with more of the Swiss Buttercream and add a super thin layer of the Swiss Buttercream to the sides of the cake. Frost until smooth. Drizzle with ganache and decorate with any desired toppings and serve as needed.
Slutty Brownie Triple Layer Cake: Chef Vision

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92 comments

  1. Paula

    Since we only live once, this is the way to do it! One question. The flavour for the brownie layer shows ?cup Dutch processed cocoa powder. Would that be 1/2 cup or 1 cup?

  2. Helen Kennedy

    This sounds totally awesome. I am suffering from withdrawal symptoms from “The Great British Bakeoff”, which finished a week ago, and using my imagination on this is filling the gap. Quite a show stopper. How much cocoa powder was it, anyway?

  3. Charlie

    Looks great! but a bit overboard for me.

    Did you know that a slut is a bad housekeeper?

  4. Karen @ Seasonal Cravings

    Oh no you didn’t! This is the most dangerous and delicious cake I’ve ever seen.!

  5. Emily

    I was looking forward to this recipe since you snapchatted about it! I don’t often tackle cakes, but I think this might be worth it 🙂

  6. Mary Frances

    WOW!! This looks breathtaking! Can’t imagine how good it tastes. I’m going to try out your recipe this weekend, hopefully it turns out to be as good as yours! 🙂

  7. Julie @ Table for Two

    Absolutely epic!! Gah, I’m so hungry for this cake now!!

  8. Heather Christo

    totally and completely ridiculous in the best possible way. I would shove my face in that.

  9. Erin @ The Spiffy Cookie

    I both love you and hate you for making this because 1) it’s amazeballs and 2) I want it all for myself and that does not bode well for my pants

  10. June @ How to Philosophize with Cake

    What an incredible cake! I love this idea, so devilishly good 🙂

  11. Linn

    This looks amazing, and I love your drawing of the cake. I will definitely try it at home!

  12. Phi @ The Sweetphi Blog

    This is genius and amazing and luxurious, I NEED this in my life stat!

  13. Patty K

    I got a toothache just looking at it! This cake can also be dubbed everything but the kitchen sink cake! 😀

  14. Leslie

    This looks insanely delicious! do you think it can be made with a hand mixer instead of the standing one and if so, how best to handle the change?

    • Gaby

      yes – 100% a hand mixer would work! Same directions + timing 🙂

  15. Émilie

    Hi,
    Beautiful cake! I wondered what is the trick to have a slendid ganache on the top of the cake, like yours ? I tried several times on different cakes, and sometimes my ganache is too liquid (too hot?) and it runs down the cake, or my ganache is too thick and I have to spead it with a knife. How do you do it ?
    Thank you very much!
    Émilie
    Montréal, QC

  16. Lisa | Mummy Made.It

    Wowsers!!! This is incredible. Probably not an everyday baking adventure but certainly a special occasion extravaganza!!

  17. Tara

    Made this yesterday, my first attempt at SMB, won’t be doing it again. My kids really do not like it, also found it was far too much in proportion to the cake.
    Yummy cake though!

  18. Tina

    Super cake but there must be an error with frisking. 1 1/4 pounds of butter? I made it and it was way way to buttery. Shouldn’t it be cups?

    • Gaby

      No – it’s right as printed. It’s a buttery flavored buttercream! If it’s too buttery for you, another icing like cream cheese frosting! THAT would be delish too!

  19. Shani

    Made this cake yesterday for my sister and it was such a hit! Thanks for the awesome recipe!

  20. Melissa

    OMG. I binge baked my way through the holiday season so I’m trying to relax for a while and let my pants get a little looser but THIS!!!!! I don’t know how much longer I can hold out now that I know this cake exists! You and Adam are pure genius!

    • Melissa

      Update: Hi Gaby! I finally made this cake (you can check it out on my instagram @startedfromthebatter!). The chocolate chip and Oreo layers were SOOOO good, but the chocolate layer was very dry. Do you have any suggestions for how I can make the cake again but make the chocolate layer differently so it’s more moist? Add liquid in addition to the cocoa powder, or something else? I would love to make this cake again, the only reason I would hesitate is because of the chocolate layer. Thank you!

  21. Robin

    Making this for my sisters birthday and she is gonna freak! About how many grams of egg whites for the Swiss buttercream? I already have a container of separated egg whites that I would like to use. Thanks!

  22. Amber

    This is absolutely amazing looking and I plan to make it for a dessert auction for a charity event!
    – Can the buttercream recipe be halved or will all of it be used? It seems like it will produce a lot of frosting.

    • Gaby

      I used almost all of it, but you can totally half the recipe and just have less frosting 🙂

  23. Makayla goertz

    I’m hoping to make this for my father’s birthday and I’m concerned about the buttercream. I’m not too excited about the buttery flavor, so what would your recommend as a substitute? Do you have a person recipe as a substitute?

  24. Raj

    Hi! Thank you so much for the beautiful idea and recipe! Unfortunately, I tried to make it this past weekend and it did not come out great (I am sure due to my fault and not the recipe’s). Do you have any advice for what to do if the chocolate layer and the oreo layer came out very dense? Almost bread like. I also found that the molasses to be a bit overpowering, but ironically that layer turned out the fluffiest?

    Hoping to make this for a friend’s birthday coming up! Thank you in advance for any help you can offer 🙂

    • Gaby

      well for the molasses layer, I’d just reduce the molasses by half and it won’t be quite so molassessy 🙂 For the other layers – did you over mix them? Sometimes when you overmix a batter it can get really dense. You just want to lightly incorporate the add-ins!

  25. Renee

    Hi I was wondering if I could just use American buttercream instead of Swiss buttercream ? And I want to make a bigger version with a 12 inch cake pan instead of 9, how would I do this?
    Thanks a lot 🙂

    • Gaby

      yes you can absolutely use any type of frosting you want!! You can do 12 inch cake pans but the layers will be much thinner than what you see pictured here!

  26. Rachel

    Hi, I’m wondering, why do you butter and flour the pan vs. just spraying it with a non stick spray? Can you just spray the pan if not can you tell me what how much flour I use to butter and flour my
    Pan? Thanks!

  27. Kate

    I made it for my friend’s birthday. I don’t have 3 9″ tins so did a tiered version with the buttercream sandwiched in each cake rather than between the layers. I also really overdid the cookies and brownies on top and cascading down one side, but I’d made so many I figured “the more the merrier”. It was well received and the Swiss buttercream was light enough to stop it being sickly. So, thanks for this recipe. It’s a real showstopper and tastes great!

  28. Sabreena Iqbal

    Thanks a million Gaby! OMG!!!
    I made this today for my daughter’s 17th birthday and wow!
    It was really very tasty. And I thank all who gave reviews, it was very handy.
    I increased the cake by 1 and 1/2 and made a square cake since. The frosting was a little runny and gave me a scare, but Alas! It was perfect.

    • Gaby

      it alters the amount of cake in each layer so I can’t say if the baking time would be the same or not

  29. Michelle

    How much time do you need to make and decorate the entire cake?*

    • Gaby

      1 cup heavy cream – warm it over the stove. Add 8 oz bittersweet chocolate – melt everything together until smooth!! Remove from heat, let cool and use!

    • Mell

      Thank you and also how much honey should I use instead of molasses

  30. Sarah Van Horn

    Will the flavor be noticeably altered if I use regular cocoa powder instead of dutch processed?

    • Gaby

      can’t say exactly what would work as a replacement to molasses as I’ve never tested it with a substitute. Is it an allergy that you’re looking to avoid?