Samoa Girl Scout Cookie Cake

Mar 01

The Recipe

My new Samoa Girl Scout Cookie Cake is made up of layers of chocolate cake, chocolate ganache, shortbread cookie crumbs, shortbread cookie frosting, and a toasted coconut caramel filling.

If there’s one cake you absolutely need to try, this is the one! In fact, Ryan gave it the number one spot on his cake list (and he’s one of my toughest critics, so that should tell ya something right there).

Like many of you, the Samoa Girl Scout cookie is my favorite of the bunch. I look forward to it every March! And I’ve been wanting to make a Samoa cookie cake since I did my Mint Chocolate Chip and Cookie Cake last year (another favorite Girl Scout Cookie).

Samoa Cookie Cake

When I start thinking about new cakes, my first goal is always to make a cake that tastes great! I hope to put together flavor and texture combinations that will WOW you. Since there’s so much going on in the Samoa cookie itself, it was important to be to capture all those same flavors and textures in the cake. In my mind, I broke down the cookie into the four parts – chocolate, shortbread, coconut and caramel. I then thought about how best to build the cake with so many flavor and texture elements. In my opinion, building the cake like a Milk Bar cake was the only way to go.

The Milk Bar style of cake is unique because you stack it inside acetate paper, and there’s no outer coat of frosting. The acetate helps support the cake and all the different layers of filling and frosting. After you stack the cake, you then refrigerate or freeze it to set and stabilize. When you’re ready to serve, you just remove the acetate paper and have this beautiful, naked cake look.

Flavors and Textures

One of the reasons I love this cake so much is because of all the flavors and textures going on. You have bittersweet chocolate cake and chocolate ganache, salty and buttery shortbread cookie crumbs, silky shortbread frosting, and then a crunchy and chewy toasted coconut caramel filling. It’s the best of everything, if you ask me. Just make sure to get all the flavors and textures in every bite. Your mouth will thank you!

One thing to note is that this cake cuts best when chilled a little bit. See my notes in the assembly section of the recipe about how to store and serve the cake.

I also link the Milk Bar website so you can see pictures and further instruction on how to build this cake. Some people think it looks a little intimidating, but I actually think it’s a great cake for beginners because there’s no decorating involved. Yes, it has a lot of elements, but if you spread out your baking over the course of a few days, it won’t feel so overwhelming.

I’m so excited for you to try this cake, and hope you love it as much as we do over here at the Rich house.

Big hugs and kisses!

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Samoa Girl Scout Cookie Cake

Layers of chocolate cake, chocolate ganache, shortbread cookie crumbs, shortbread cookie frosting, and toasted caramel coconut filling.

Ingredients

FOR THE CHOCOLATE CAKE

  • 1 1/4 cups  plus 2 tablespoons all-purpose flour
  • 1 cup  minus 1 tablespoons granulated sugar
  • 1/3 cup plus 2 tablespoons dark cocoa powder
  • 1 teaspoon baking soda
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon kosher salt
  • 1/2 cup buttermilk at room temperature
  • 1/4 cup vegetable oil
  • 2 large eggs at room temperature
  • 1/2 teaspoon pure vanilla extract
  • 1/2 cup hot water

FOR THE GANACHE

  • 1 cup dark or semi sweet chocolate chips
  • 1/2 cup heavy whipping cream

FOR THE SHORTBREAD CRUMBS

  • 1/4 cup granulated sugar
  • 3/4 cup unsalted butter room temperature
  • 2 cups all-purpose flour

FOR THE SHORTBREAD BUTTERCREAM

  • 1 1/4 cups shortbread cookie crumbs
  • 1/2 cup milk
  • 1 teaspoon kosher salt
  • 6 tablespoons butter slightly chilled
  • 1 1/2 cups powdered sugar

FOR THE COCONUT FILLING

  • 1 cup granulated sugar
  • 8 tablespoons water
  • 2 teaspoons corn syrup
  • 2/3 cup heavy whipping cream
  • 1 teaspoon pure vanilla extract
  • 2 teaspoons kosher salt
  • 14 oz. bag of sweetened shredded coconut
US Customary - Metric

Instructions

FOR THE CAKE

  1. Preheat the oven to 360 degrees F. Spray a quarter sheet pan and line it with parchment and spray again. Set aside.
  2. In a stand mixer fitted with the paddle attachment, combine the flour, sugar, cocoa powder, baking powder, baking soda and salt. Mix for about 30 seconds.
  3. In a separate bowl, combine all of the wet ingredients and whisk for a few seconds.
  4. With the mixer on low speed, slowly add the wet ingredients to the dry ingredients. Once all the wet ingredients are added, continue to mix on low speed for 30 seconds. Scrape down the sides of the bowl and mix for another 15 to 30 seconds. Don't over beat this batter.
  5. Pour the batter into a quarter sheet baking pan. Bake the cake for 16-18 minutes.

FOR THE SHORTBREAD BUTTERCREAM

  1. Combine the shortbread cookie crumbs, milk, and salt in a blender. Turn the speed to medium-high and puree until smooth and homogenous. This should take about 1 to 3 minutes, depending on your blender (I use a Magic Bullet). If the mixture does not catch on your blender blade, turn the blender off, take a small teaspoon, and scrape down the sides of the canister, remembering to scrape under the blade, then try again.
  2. In the bowl of a stand mixer fitted with the paddle attachment, combine the butter and powdered sugar, and beat together on medium-high for 2 to 3 minutes, until light and fluffy. Scrape down the sides of the bowl with a spatula and mix for another 20 seconds.
  3. On low speed, add the contents of the blender to the butter and powdered sugar. After 1 minute, crank the speed up to medium-high and let the mixture beat for another 2 minutes. Scrape down the sides of the bowl. If the mixture is not a uniform, very pale, barely tan in color, give the bowl another scrape-down and another minute of high-speed paddling.
  4. Use the frosting immediately, or store it in an airtight container in the fridge for up to 1 week.

FOR THE GANACHE

  1. In a microwave safe bowl, heat the cream for about 1 minute. Pour the cream over the chocolate and let sit for about 5 minutes. Mix the chocolate and cream until smooth and shiny. If needed, microwave the mixture for an additional 30 seconds.
  2. Let cool slight before adding to the cake.

FOR THE SHORTBREAD CRUMBS

  1. Preheat your oven to 350 degrees F. Line a baking sheet with parchment paper. Set aside.
  2. Combine the sugar and butter in the bowl of a stand mixer fitted with the paddle attachment. Stir in the flour. If the mixture is too crumbly, you can add another tablespoon of butter.
  3. Sprinkle the shortbread cookie dough crumbs evenly over the baking sheet. 
  4. Bake for about 20 minutes, until lightly golden brown on top. Cool completely before using. 

FOR THE COCONUT FILLING

  1. Mix sugar, water and corn syrup in a small saucepan.
  2. Bring the water and sugar mixture to boil over medium heat, but DO NOT STIR. (Stirring encourages crystallization). Let the mixture cook until it caramelizes into a golden brown color. It happens quickly, so keep an eye on it.
  3. Remove the caramelized sugar syrup from the heat and slowly mix in the cream. Pour in just a tiny bit at a time, especially at the beginning, and mix to combine. You can start adding more and more as you go along.
  4. Mix in salt and vanilla. Stir to combine.
  5. Set the caramel sauce to the side and let cool while you toast the coconut.
  6. Set your oven to 425 degrees F. Line a baking sheet with parchment and pour all of the coconut evenly onto the baking sheet. Bake the coconut for about 10 minutes, or until golden brown. Remove from oven and toss, and then toast for another 10 minutes, or until golden brown all over. Let cool completely.
  7. Combine the caramel and the coconut. You'll use about 1/3 of the mixture for each layer of the cake.

ASSEMBLY

  1. For the cake, put a piece of parchment or a silpat on the counter. Invert the cake onto it and peel off the parchment or silpat from the bottom of the cake. Use the cake ring to stamp out 2 circles from the cake. These two full circles will be your top 2 cake layers. The remaining cake “scraps” will come together to make the bottom layer of the cake.
  2. You can see pictures from the Milk Bar website HERE or check my Instagram and YouTube for videos.
  3. For the first layer, clean the cake ring and place it in the center of a sheet pan lined with clean parchment. Line the cake ring with one strip of acetate.
  4. Place the cake scraps together inside the ring and use the back of your hand to tamp the scraps together into a flat even layer.
  5. Use the back of a spoon to spread one-third of the chocolate ganache in an even layer over the cake. 
  6. Sprinkle about 1/3 of the shortbread cookie crumbs evenly over the ganache. Use the back of your hand to anchor them in place.
  7. Use a piping bag to pipe about 1 cup of the shortbread cookie frosting into the shortbread cookie crumbs.
  8. Sprinkle 1/3 of the toasted coconut caramel filling over the frosting. 
  9. For the second layer, gently tuck the second strip of acetate between the cake ring and the top ¼ inch of the first strip of acetate, so that you have a clear ring of acetate 5 to 6 inches tall – high enough to support the height of the finished cake.
  10. Set a cake round on top of the coconut filling, and repeat the process for layer 1 (if 1 of your 2 cake rounds is jankier than the other, use it here in the middle and save the prettier one for the top).
  11. For the third layer, nestle the remaining cake round into the coconut filling, cover the top of the cake with the remaining ganache, shortbread cookies, shortbread frosting and coconut filling. 
  12. Transfer the sheet pan to the freezer and freeze for a minimum of 12 hours to set the cake and filling. The cake will keep in the freezer for up to 2 weeks (make sure to wrap in plastic wrap). 
  13. At least 5 hours before you are ready to serve the cake, pull the sheet pan out of the freezer and, using your fingers and thumbs, pop the cake out of the cake ring. gently peel off the acetate, and transfer the cake to a platter or cake stand. Let it defrost in the fridge for a minimum of 4 hours (wrapped well in plastic, the cake can be refrigerated for up to 5 days).

20 thoughts on “Samoa Girl Scout Cookie Cake”

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  1. I started making this cake tonight… holy cow my house smells AMAZING! I cannot wait to assemble it tomorrow. It will be perfect for my hubby’s b-day.

    Reply

  2. Quick question, (THIS LOOKS AMAZING!! BTW) When you make the recipe for the shortbread cookie crumbs, is it enough for the cookie crumb layer as well as the 1 1/4 C needed for the frosting?

    Reply

  3. I’m feeding a lot of people, so I wanted to do an 8-inch cake. Can I use 8 inch pans for this? and should I one and a half everything?

    Reply

  4. In the process of making this, can’t wait to try it!

    One question: In the directions for the “Shortbread Cookie Frosting” it says to “combine the butter and powdered sugar and cream” but there doesn’t seem to be “cream” in the ingredient list.

    Thanks!

    Reply

  7. I’m curious… do you ever do any of your Milk Bar inspired cakes in regular cake pans? I’d like to make a bigger cake so I’m considering just using my pans instead of a cake ring and going for more if a semi-naked look.

    Reply

  9. Courtney, I loved this cake! I made only one tiny change – I used hot coffee instead of hot water for the cake other than that I followed your recipe and it did not disappoint! The plastic folder worked perfectly too by the way! It’s a lot of steps but worth it…absolute delicious & impressive looking to boot! 😊

    Reply

  10. This is the third cake of yours I’ve made and my favorite so far! But they’re all so good!! Your site is officially my go to now. Thanks for sharing!!!

    Reply

  11. My daughter was wanting a trifle for her birthday, and I was really wanting to try this recipe, so I combined my thoughts with yours, and man was it good!
    Here’s how I layered the trifle:
    -chocolate cake, broken in small pieces
    -a layer of salted caramel mouse
    -a layer of your shortbread cookie crumbs
    -a layer of your coconut caramel mixture
    -your chocolate ganache
    -repeat layers

    The caramel mousse was so good with all of the other elements, and didn’t make the cookie bits get soggy like a pudding might! I would also think the caramel mousse would be great as a cake filling!

    Reply

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