4.98 from 35 votes

Triple Chocolate Cake

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110 Comments

Servings: 12 servings

1 hr 55 mins

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This triple chocolate cake is made with three layers of fudgy, moist dark chocolate cake, a rich chocolate frosting, and chocolate ganache. It’s an incredible and decadent dessert! Recipe includes a how-to video!

Slice of triple chocolate cake missing a bite on a white plate.

Triple Chocolate Cake with Ganache

If you’re a chocoholic like me, you’re probably always on the hunt for your next fix. Devil’s food cake or fudge cookies will do in a pinch, but if you have a really stubborn itch to scratch, this triple chocolate cake will do the trick!

With three types of chocolate and an intensely fudgy texture, this cake is truly enchanting. In fact, I’m convinced this cake tastes just like the one Bruce Bogtrotter stole from Mrs. Trunchbull in the movie Matilda! As hard as that scene is to watch, doesn’t it always make you want chocolate cake?!

Cross section of a chocolate cake consisting of three layers of cake, chocolate ganache, and chocolate frosting.

My triple chocolate cake is:

  • Fudgy: It has a moist, dark chocolate crumb that pairs fabulously with the ganache center and my favorite chocolate frosting (though you could substitute chocolate buttercream instead).
  • Impressive: With three tall layers topped with piped icing swirls and a ganache drip, this is one stunning cake. Check out my separate detailed tutorial on how to do the ganache drip, if you need a refresher.
  • Decadent: With chocolate on top of chocolate on top of–you guessed it–even more chocolate, this cake was bound to be rich! It’s a chocolate lover’s dream come true.
  • Straightforward: Honestly, yes, there are a lot of steps, but none of them overly complicated. Plus, the cake batter comes together in one bowl without a mixer!

What You Need

Triple chocolate cake contains quite a few ingredients, but that’s to be expected with a dessert as decadent as this! Let’s highlight the most important ones before we dig in.

Overhead view of ingredients including chocolate bars, buttermilk, cocoa powder, and more.
  • Cocoa powder. Dutch process or dark cocoa powder are my preferences for this cake, since their flavor is deeper and more intense. You could use natural cocoa, but the flavor will be different. Curious about the differences between cocoa powders? Read my natural vs. Dutch process cocoa post!
  • Hot water or coffee. Hot coffee will yield a stronger, more intense chocolate (not coffee) flavor, but hot water will work too. Whichever you use, make sure it’s steaming HOT–even boiling! This will bloom your cocoa powder and enhance its flavor. I use this trick in my double chocolate muffins too.
  • Chocolate. Use either semisweet or dark chocolate, whatever is your preference. You’ll need 20 oz total; 12 oz for the frosting and 8 oz for the chocolate ganache.
  • Buttermilk. Just like in German chocolate cake, we’ll add buttermilk here for flavor and moisture. Buttermilk also helps activate our baking soda, especially since we are using an alkaline cocoa powder. If you don’t keep buttermilk on hand, my buttermilk substitute will work in a pinch.
  • Cream. Add a splash of cream to your frosting if it’s too thick (this can sometimes happen if you accidentally over-measure your powdered sugar), then save the rest for making the chocolate ganache.

SAM’S TIP: Make sure all of your ingredients are at room temperature before getting started. This ensures everything will combine easily, which means you are less likely to over-mix your cake.

Remember, this is just an overview of the ingredients I used and why. For the full recipe please scroll down to the bottom of the post!

Assembling & Decorating Triple Chocolate Cake

Collage of four photos showing chocolate frosting and ganache being swirled on top of cake layers before stacking and frosting.
  1. Pipe a frosting dam on one cooled cake layer, add a smaller ring inside, then pipe a small circle inside of the second ring. This should look like a bullseye.
  2. Add ⅓ of the ganache inside the two rings.
  3. Top with another layer of cake and repeat this same frosting/ganache process, then add the final cake layer.
  4. Add a crumb coat and chill in the fridge for 15 minutes, then finish frosting the cake.
Two photos showing a ganache drip being added to a cake before adding chocolate icing swirls.
  1. Decorate the top of the cake with the remaining ganache, adding a ganache drip if you’d like. If you need a tutorial on how to do this, check out my how to do a ganache drip post!
  2. Pipe frosting swirls on top of the ganache once it has set. Don’t forget some chocolate sprinkles on top!

SAM’S TIP: This recipe makes a lot of frosting! Since this is a decadent three layer cake, and I want to make sure you have plenty to play around with for decoration. You can always reduce the frosting if you wish though!

Chocolate cake topped with ganache drips and chocolate icing swirls.

Frequently Asked Questions

Can I make this recipe as a sheet cake?

Yes, this recipe will fit in a 9×13 pan, but the bake time will be different, so definitely keep an eye on it.

To decorate, you can try to mimic what I suggest here, or you could do one layer of icing followed by all the chocolate ganache, and then decorate with the icing swirls if desired.

How do I store triple chocolate cake?

This cake can sit out at room temperature for about 24 hours, but after that it should go in the fridge where it will keep for five days.

Note that the ganache and frosting will get quite firm in the fridge. For the fudgiest and best texture, remove the cake from the fridge and let it sit at room temperature for a little while before serving.

Can I use a different frosting?

Sure! I personally recommend my chocolate buttercream, chocolate cream cheese frosting, or white chocolate buttercream. My chocolate fudge frosting or chocolate swiss meringue buttercream would also work though!

Slice of chocolate cake with chocolate ganache and chocolate frosting on a white plate.

Want to add a fresh twist? Serve with a drizzle of raspberry sauce!

Enjoy!

Let’s bake together! I’ll be walking you through all the steps in my written recipe and video below! You can find all of my baking videos for free on YouTube.

Slice of triple chocolate cake missing a bite on a white plate.
4.98 from 35 votes

Triple Chocolate Cake

This triple chocolate cake is made with three layers of fudgy, moist dark chocolate cake, a rich chocolate frosting, and chocolate ganache. It's an incredible and decadent dessert!
Recipe includes a how-to video!
Prep: 1 hour 30 minutes
Cook: 25 minutes
Total: 1 hour 55 minutes
Servings: 12 servings

Equipment

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Ingredients

Cake Layers

  • 1 ¾ cups (220 g) all-purpose flour
  • 1 cup (200 g) granulated sugar
  • 1 cup (200 g) light brown sugar, firmly packed
  • ¾ cup (75 g) dark cocoa powder, (see note)
  • 1 ½ teaspoons baking soda
  • ¾ teaspoon table salt
  • cup (155 ml) neutral cooking oil, I use avocado oil, vegetable, or canola would also work
  • ½ cup (113 g) unsalted butter, melted
  • 2 large eggs, room temperature
  • 2 teaspoons vanilla extract
  • 1 cup (236 ml) buttermilk
  • ½ cup (118 ml) very hot/boiling water or hot coffee

Frosting (see note)

  • 12 oz (340 g) semisweet chocolate, chopped into small pieces
  • 2 cups (450 g) unsalted butter, softened
  • 4 cups (400 g) powdered sugar
  • 1 teaspoon vanilla extract
  • ¼ teaspoon table salt
  • 2-4 Tablespoons heavy cream or milk, as needed

Ganache

  • 8 oz (226 g) semisweet or dark chocolate, chopped
  • 1 cup (236 ml) heavy whipping cream

Instructions 

Cake Layers

  • Preheat the oven to 350F (175C) and line the bottoms of three 9” (23cm) round pans with parchment paper and grease and flour the sides (or spray with baking spray). Set aside.
  • In a large mixing bowl, whisk together flour, sugars, cocoa powder, baking soda, and salt. Whisk well to break up any clumps from the brown sugar.
    1 ¾ cups (220 g) all-purpose flour, 1 cup (200 g) granulated sugar, 1 cup (200 g) light brown sugar, ¾ cup (75 g) dark cocoa powder, 1 ½ teaspoons baking soda, ¾ teaspoon table salt
  • Add oil and melted butter and stir until all of the dry ingredients are moistened.
    ⅔ cup (155 ml) neutral cooking oil, ½ cup (113 g) unsalted butter
  • Add eggs and vanilla extract and stir well until you have a uniform batter.
    2 large eggs, 2 teaspoons vanilla extract
  • Gradually stir in buttermilk until batter is completely combined.
    1 cup (236 ml) buttermilk
  • Finally, slowly (carefully) pour hot water or coffee into the batter, stirring until uniform. Be sure to scrape the sides and bottom of the bowl.
    ½ cup (118 ml) very hot/boiling water or hot coffee
  • Divide batter evenly into prepared cake pans and transfer to center rack of 350F (175C) oven. Bake for 22-25 minutes or a toothpick inserted in the center of each cake comes out clean or with a few moist crumbs (if your oven is uneven you may need to rotate cakes during baking).
  • Allow cakes to cool for 15 minutes before running a knife around the edge to loosen from the pan and then carefully inverting onto a cooling rack to cool completely before decorating.
  • While cakes cool, prepare frosting and then ganache.

Frosting (see note)

  • Melt chocolate in a heatproof bowl by heating in 20-second intervals and stirring in between until smooth and completely melted. Set aside and allow to cool until no longer warm to the touch.
    12 oz (340 g) semisweet chocolate
  • Place the butter in a separate, large bowl and use an electric mixer to beat until creamy and smooth.
    2 cups (450 g) unsalted butter
  • Once chocolate has cooled, give it a stir (make sure it hasn’t re-solidified) and then drizzle into the butter. Stir until well-combined with the butter.
  • With mixer on low-speed, gradually stir in sugar.
    4 cups (400 g) powdered sugar
  • Add vanilla extract and salt and stir well.
    1 teaspoon vanilla extract, ¼ teaspoon table salt
  • If the frosting is too thick, add cream or milk, a tablespoon at a time, until a smooth and spreadable consistency is reached. Set aside while you prepare your ganache.
    2-4 Tablespoons heavy cream or milk

Ganache

  • Place chocolate in a small heatproof bowl.
    8 oz (226 g) semisweet or dark chocolate
  • Place cream in a small saucepan and heat over medium heat until steaming. Remove from heat and pour evenly over chocolate. Cover with foil and let sit undisturbed for 5 minutes.
    1 cup (236 ml) heavy whipping cream
  • Remove foil and whisk until smooth. Allow ganache to cool 15 minutes before proceeding (I like to pour mine into a small squeeze bottle to make application easier).

Assemble the cake

  • Note that if cakes are uneven you may wish to level them before assembling. Place frosting in a large piping bag fitted with a large open tip.
  • Place one cake layer on serving tray. Do a large dam around the edge of the cake and a smaller ring in the center followed by a circle of frosting in the very center (like you are making a bullseye – photo included as a visual in the post). Squeeze ganache inside the two rings, using about ⅓ of the ganache. Top with second layer of cake and repeat. Top with last layer of cake and frost entire cake with frosting. I usually do a crumb coating and then refrigerate the cake for 15 minutes before doing the final layer of frosting. If ganache becomes too cold/firm, heat it in the microwave in 5 second intervals until proper consistency is reached.
  • Use remaining ganache to decorate the top of the cake (see my detailed tutorial on how to do a ganache drip if you’d like) and refrigerate for 15 minutes for ganache to begin to set before adding more frosting.
  • Once ganache has set, fit a piping bag with remaining frosting with a large open-star tip (I like Ateco 846 or 848) and do final decorative piping on top of cake.

Notes

Making in different pans

Three 8” (20cm) pans: Cake will take several minutes longer to bake.
To make in two pans (instead of 3): Cakes will need to bake longer, about 30-35 minutes in 8” (20cm) round pans or slightly less time in 9” (23cm) pans.

Cocoa powder

Dark cocoa is recommended for best flavor, but you may substitute Dutch process or natural cocoa, instead.

Frosting

This recipe makes a lot of frosting so that you can sufficiently ice the cake and do the decorative border on top, as shown in photos. If you prefer less frosting, you can reduce this recipe in half. Some other good frostings for this cake include my chocolate buttercream, chocolate cream cheese frosting, or white chocolate buttercream

Storing

Store at room temperature for up to 24 hours or refrigerate in an airtight container for up to 5 days. Cake tastes best at room temperature so I like to pull it out of the refrigerator at least 20 minutes before slicing and serving.

Nutrition

Serving: 1serving | Calories: 1196kcal | Carbohydrates: 117g | Protein: 9g | Fat: 80g | Saturated Fat: 42g | Polyunsaturated Fat: 6g | Monounsaturated Fat: 26g | Trans Fat: 2g | Cholesterol: 159mg | Sodium: 388mg | Potassium: 494mg | Fiber: 7g | Sugar: 90g | Vitamin A: 1604IU | Vitamin C: 0.1mg | Calcium: 110mg | Iron: 6mg

Nutrition information is automatically calculated, so should only be used as an approximation.

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4.98 from 35 votes (12 ratings without comment)

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Recipe Rating




110 Comments

  1. Danielle says:

    5 stars
    The ABSOLUTE BEST chocolate cake recipe out there! This is a must try! I promise you won’t be disappointed. The texture and chocolate flavor is perfect. I’ve tried tons of chocolate cake recipes but I always felt like it could be better. Some have been too dense, too crumbly, or not had enough chocolate flavor. I wanted that store bought chocolate cake feel. I FINALLY FOUND IT! This is perfect for chocolate lovers! The chocolate flavor shines throughout this cake, and the frosting and ganache is fantastic. Every component of this cake is chocolate foward and sweetness second. I appreciate the frosting not being overly sweet, and I used the hot coffee option instead of hot water. Thank you so much for this recipe! I will defintely be following more of your recipes.

    1. Sam Merritt says:

      Thank you so much for trying my recipe, Danielle! I’m so glad it was such a hit! I hope you love everything you try. I look forward to hearing from you again soon! 🙂

  2. Kris says:

    Hi Sam,
    Can you make this recipe using Swerve sweetener? Would it be a 1:1 ratio?
    Thank you

    1. Sam Merritt says:

      Hi Kris! I am not very familiar with using swerve as a substitute so I can’t say for sure how it would work. If you do try it I would love to know how it goes. 🙂

  3. Alexis Shelton says:

    Hello! I am so excited to make this! Do you have any tips to make this high altitude friendly?

    1. Sam Merritt says:

      Hi Alexis! Unfortunately I don’t have much experience with high altitude baking so I can’t say for sure if anything would need to be done differently. Hopefully someone can chime in to help if they are familiar with high altitude baking.

  4. Bobbi Evans says:

    So I made this tonite into sheet cake that I cut in half to stack tomorrow with the frosting & ganache. The cake seems super dense almost like a brownie..is this normal? I always freeze then frost & decorate the next day. I’m just wondering if it was the pan I used or if it should be dense..I followed the recipe to a T with the exception of using salted butter & omitted the added salt. Still tastes good (got some off the edge lol)

    1. Sam Merritt says:

      Hi Bobbi! It shouldn’t be like a brownie, but it is a very fudgy cake. Let me know how the cake turns out. 🙂

      1. Bobbi Evans says:

        5 stars
        It was absolutely perfect! The ganache made this cake! I will definitely be making it again!

      2. Casey @ Sugar Spun Run says:

        We’re so glad it turned out so well for you, Bobbi! 🙂

      3. Bobbi Evans says:

        5 stars
        Do you have an actual cookbook? I’d love to have these recipes in print without having to print them all from the internet (I’m super old school lol)

      4. Sam Merritt says:

        Hi Bobbi! I am actively working on making a cookbook. I hope to have it done at some point this year. 🙂

  5. Shane O'Neal says:

    Does anyone know how many cups of batter this recipe makes? I want to scale it to make a three tiered cake using pans (10″, 8″, 6″) that are three inches deep. I need the total volume to calculate the scaling factor for the ingredients.

    1. Sam Merritt says:

      Hi Shane! I believe it makes about 8 cups of batter. 🙂

  6. Stella says:

    If I were to make these into cupcakes how long should I bake for?

    1. Sam Merritt says:

      Hi Stella! Cupcakes normally bake about 17 minutes. I would recommend checking out my chocolate cupcakes though. 🙂

  7. Meg says:

    5 stars
    Can i make the layers ahead via freezing for a week ? My brother’s birthday is after right after thanksgiving— I would decorate it that day.
    Many thanks

    1. Emily @ Sugar Spun Run says:

      That should work just fine, Meg! Just be sure to wrap them well.

  8. Meg says:

    Can the frosting be made 1 day ahead of making the cake?

    Also, how to position cake pans if oven is not big enough to have 3 pans on rack?

    Thankyou so much

    1. Sam Merritt says:

      Hi Meg! This frosting can be made in advance. If kept in the refrigerator you will need to let it sit out at room temperature for a while to soften. It may need to be put in a bowl and whipped with a little more milk or heavy cream the next day. To fit the cake pans, I would probably do 2 cakes and then just do the third after the other 2 have baked. 🙂

      1. Monica says:

        5 stars
        first I will start by saying I am obsessed with all of your recipes , I just recently discovered the gingerbread bread cake oh my greatness my family fell in love my two year old took two bites off his spoon let out a small growl and grabbed two handfuls of cake and was eating faster than I could clean it up lol…. my question is when making this chocolate cake recipe what type of buttermilk is needed most shops around me only sell low fat buttermilk unless around holidays one store will sell full fat..which one is better to use?

      2. Sam Merritt says:

        I’m so glad you’ve enjoyed everything so much, Monica! I use whole milk buttermilk. You would likely have a little bit thinner batter if using a reduced fat buttermilk so I can’t say for sure how it would turn out. I hope you love this cake! 🙂