Chocolate Mud Cake with Ganache Frosting
This chocolate mud cake is rich, dense, and intensely chocolatey with a smooth chocolate ganache frosting. It bakes up tall with a tight, fudgy crumb that slices cleanly and stays moist for days.
Made with dark chocolate, cocoa, hot coffee, and sour cream, this cake delivers deep flavor without being overly sweet. It’s the kind of chocolate cake that feels indulgent but balanced — perfect for celebrations or simply when you want a proper chocolate dessert.
When I ran my cake business, this chocolate mud cake quickly became one of my most requested flavors. Customers didn’t want trendy combinations or novelty fillings — they wanted a proper chocolate cake. Rich, indulgent, and made with real depth of flavor.
It’s dense and moist with a fudgy texture, somewhere between a classic chocolate cake and a flourless torte. Many customers would tell me, “This is the kind of chocolate cake you want when your craving chocolate.”
Unlike a light chocolate sponge, a mud cake has a tight crumb and rich structure. It slices cleanly, layers beautifully, and holds up well under ganache or decorations — which is why it’s also a favorite among cake decorators.
What Is Chocolate Mud Cake?
Chocolate mud cake is a dense chocolate cake known for its tight crumb and moist texture. Unlike a light sponge cake, it uses melted chocolate and hot liquid to create a deeper flavor and heavier consistency.
The name comes from its rich, slightly compact texture — softer than a brownie but denser than traditional chocolate cake. It’s commonly paired with chocolate ganache or buttercream and is popular for layered celebration cakes.
Why You’ll Love This Recipe
- Deep chocolate flavor – Dark chocolate, cocoa powder, and coffee work together to intensify the chocolate without tasting bitter.
- Moist but sturdy texture – Sour cream keeps the crumb tender while balanced leavening gives just enough lift.
- Perfect for layering – Bakes tall and even in 8-inch pans.
- Ganache-friendly – The dense crumb pairs beautifully with chocolate ganache.
- Make-ahead friendly – This cake tastes even better the next day.
Ingredients for Chocolate Mud Cake
- Dark Chocolate – Use good-quality dark chocolate (60–70% cocoa). This gives the cake its deep chocolate base. You can use semi-sweet if you prefer a slightly sweeter flavor. Avoid milk chocolate in the cake itself — it will make it too sweet and reduce structure.
- Unsalted Butter – Butter adds richness and structure. If using salted butter, reduce the added salt slightly.
- White Sugar + Brown Sugar – White sugar gives structure, while brown sugar adds moisture and depth. You can use all white sugar if needed, but the flavor will be slightly lighter.
- Eggs – Use large eggs at room temperature. They help bind the batter and give the cake stability. Cold eggs can cause the melted chocolate mixture to seize slightly.
- Sour Cream – Sour cream keeps the crumb moist and tender. Full-fat works best. You can substitute Greek yogurt in the same amount if needed.
- All-Purpose Flour – Regular all-purpose flour works perfectly here. Avoid cake flour — it will make the cake too soft for a true mud cake texture.
- Cocoa Powder – Use unsweetened cocoa powder. Dutch-process gives a darker color and smoother flavor, but natural cocoa works well too.
- Baking Powder + Baking Soda – This combination provides gentle lift while keeping the cake dense. If using self-raising flour, omit the baking powder and salt and reduce the baking soda slightly.
- Hot Water + Coffee – Hot liquid blooms the cocoa and intensifies the chocolate flavor. You can replace the coffee with hot water if preferred — the cake will not taste like coffee.
Step-by-Step: Chocolate Mud Cake with Chocolate Ganache Frosting
Prep the pans and oven
Preheat the oven to 325°F / 165°C. Grease and line one 9-inch round cake pan (or two 7-inch round cake pans) with parchment on the base and strips up the sides. Mud cakes are moist and delicate, so the parchment makes unmolding easy and keeps the sides neat.
Melt the chocolate and butter
In a microwave-safe bowl, melt the butter and chocolate together until smooth and glossy. You can do this over low heat on the stovetop or in short bursts in the microwave. Stir well and remove from the heat.
Add the sugars
Stir the white sugar and brown sugar into the warm chocolate mixture. Mix until the batter looks glossy and the sugars start to dissolve (it won’t become perfectly smooth—and that’s fine).
Add the eggs
Add the eggs one at a time, mixing well after each addition. This helps the batter emulsify so it bakes evenly and doesn’t split.
Add sour cream and vanilla
Stir in the sour cream and vanilla until the mixture is smooth. At this stage the batter should look thick, shiny, and cohesive.
Sift in the dry ingredients
Sift the flour, cocoa powder, baking powder, baking soda, and salt directly into the bowl. Fold just until the flour disappears. Don’t overmix here—once the flour is in, you want to keep the crumb tender.
Add the hot coffee last
Pour in the hot water mixed with instant coffee and stir until the batter is smooth and uniform. The batter will loosen up and look more fluid—that’s exactly what you want for a mud cake.
Bake
Pour the batter into the prepared pans and bake for 80 to 90 minutes until a skewer comes out with moist crumbs (not wet batter). Don’t overbake—mud cake is meant to be fudgy and moist. (If you bake in two 7-inch cake pans, they will take about 35 to 40 minutes.
Cool completely
Let the cakes cool in the pans for about 10–15 minutes, then turn them out onto a rack to cool completely before frosting. For the cleanest layering, chill the cakes for at least two hours before assembling.
Make the ganache
In a microwave-safe bowl, combine the chopped chocolate and heavy cream until smooth. Add the butter and corn syrup, stirring until glossy.
Cool to spreading consistency
Let the ganache sit at room temperature until it thickens to a soft, spreadable consistency. If your kitchen is warm, pop it in the fridge briefly and stir every few minutes so it thickens evenly.
Assemble
- Cut the top crust off the cake, making sure it is leveled. Then cut the cake in half horizontally. You can also cut the cake into 3 horizontal layers.
- Place one cake layer on a cake board or plate. Spread an even layer of ganache over the top, and add the next layer. Finally, cover the top and sides with the remaining ganache. Use your spatula to swirl the ganache around to give it a rustic finish.
- Chill briefly if needed, then finish smoothing.
Storage & Freezing
Store at room temperature for up to 3–4 days in an airtight container.
Refrigerate for up to 5–6 days. Bring to room temperature before serving.
To freeze, wrap tightly in plastic wrap and foil for up to 3 months. Thaw overnight in the refrigerator.
Baking Tips for Chocolate Mud Cake
- Use one deep 8-inch pan – This recipe is designed to bake as one tall cake. Baking in a single pan gives better height and a more even crumb. Once cooled, slice into 2 or 3 layers, as desired.
- The batter will be thick and glossy – This is not a runny sponge batter. It should be rich and smooth from the melted chocolate and sour cream.
- A crust on top is normal – Mud cake forms a slight crust as it bakes. This is expected and does not mean the cake is overbaked.
- Don’t overbake – The cake is done when the center is set and a skewer comes out with moist crumbs. Overbaking will dry out the crumb.
- Chill before slicing – For clean, even layers, chill the cake for 30–60 minutes before cutting. Mud cake slices beautifully when slightly cold.
- Let the ganache thicken naturally – For a smooth finish, allow the ganache to cool to a spreadable consistency before frosting. If it becomes too firm, gently warm and stir until smooth again.
Troubleshooting
| Problem | Why It Happened | What to Know / Fix |
|---|---|---|
| Slight dip in the center | Mud cake naturally settles as it cools due to its dense structure. | This is normal. As long as the center is baked through, a slight dip is expected. |
| Cake is dry | Overbaked or oven temperature too high. | Bake at 325°F / 165°C and remove when a skewer shows moist crumbs. Do not overbake. |
| Thick crust or cracked top | High sugar and melted chocolate create a surface crust. | A light crust is normal. Level gently if needed before frosting. |
| Ganache too runny or too firm | Ganache consistency not adjusted before frosting. | Let ganache cool until thick and spreadable. If too firm, warm gently and stir until smooth. |
Frequently asked questions
To keep your cake fresh, store it in an airtight container at room temperature for up to three days. Alternatively, you can refrigerate the cake for up to a week. You can even freeze it in the freezer for up to a month.
It’s called mud cake because of its dense, moist texture and dark appearance, which resemble “mud.” The cake is rich and compact rather than airy.
Mud cake stays moist because it contains melted chocolate, sour cream, and hot liquid. The cake is also baked low and slow, which helps prevent it from drying out.
Chocolate mud cake is denser and richer than traditional chocolate cake. It has a tight crumb and fudgy texture due to melted chocolate and hot liquid in the batter, while regular chocolate cake is lighter and more sponge-like.
The cake is done when the center is set and a skewer inserted comes out with moist crumbs, not wet batter. The top may form a light crust — that’s normal.
Yes. Wrap the cooled cake tightly in plastic wrap and foil and freeze for up to 3 months. Thaw overnight in the refrigerator before frosting or serving.
The Ultimate Chocolate Mud Cake with Ganache
Who doesn't love a decadent and rich chocolate mud cake? It's the perfect layer cake for any celebration, but perfecting the recipe can be a challenge. Don't worry, I've got you covered. Here's everything you need to know to create a show-stopping mud cake every time.
Video
Ingredients
- 226 g (1 cup) Unsalted butter room temperature
- 226 g (8 oz) Chocolate semi-sweet or dark
- 200 g (1 cup) White sugar
- 220 g (1 cup) Brown sugar
- 3 large Eggs room temperature
- 120 ml (½ cup) Sour cream
- 2 tsp Vanilla extract
- 225 g (1¾ cups) All-purpose flour
- 50 g (½ cup) Cocoa Powder
- 1 tsp Baking powder
- ½ tsp Baking soda
- 1 tsp Salt
- 250 ml (1 cup) Boiling water with 2 tsp ground coffee
- 400 g (14 oz) Dark chocolate
- 320 ml (1¼ cups) Heavy cream 38% fat
- 2 tbsp Unsalted Butter
- 2 tbsp Corn syrup or honey
Method
- Prep the pans and oven – Preheat the oven to 325°F / 165°C. Grease and line one 9-inch round cake pan (or two 7-inch round cake pans) with parchment on the base and strips up the sides. Mud cakes are moist and delicate, so the parchment makes unmolding easy and keeps the sides neat.
- Melt the chocolate and butter – In a microwave-safe bowl, melt the butter and chocolate together until smooth and glossy. You can do this over low heat on the stovetop or in short bursts in the microwave. Stir well and remove from the heat.226 g Unsalted butter , 226 g Chocolate
- Add the sugars – Stir the white sugar and brown sugar into the warm chocolate mixture. Mix until the batter looks glossy and the sugars start to dissolve (it won’t become perfectly smooth—and that’s fine).200 g White sugar, 220 g Brown sugar
- Add the eggs – Add the eggs one at a time, mixing well after each addition. This helps the batter emulsify so it bakes evenly and doesn’t split.3 large Eggs
- Add sour cream and vanilla – Stir until smooth. At this stage the batter should look thick, shiny, and cohesive.120 ml Sour cream, 2 tsp Vanilla extract
- Sift in the dry ingredients – Sift the flour, cocoa powder, baking powder, baking soda, and salt directly into the bowl. Fold just until the flour disappears. Don’t overmix here—once the flour is in, you want to keep the crumb tender.225 g All-purpose flour, 50 g Cocoa Powder, 1 tsp Baking powder, ½ tsp Baking soda, 1 tsp Salt
- Add the hot coffee last – Pour in the hot water mixed with instant coffee and stir until the batter is smooth and uniform. The batter will loosen up and look more fluid—that’s exactly what you want for a mud cake.250 ml Boiling water
- Bake – Pour the batter into the prepared pan and bake for 80 to 90 minutes until a skewer comes out with moist crumbs (not wet batter). Don’t overbake—mud cake is meant to be fudgy and moist. (If you bake in two 7-inch cake pans, they will take about 35 to 40 minutes.
- Cool completely – Let the cakes cool in the pans for about 10–15 minutes, then turn them out onto a rack to cool completely before frosting. For the cleanest layering, chill the cakes for 2 hours before assembling.
- Make the ganache – Heat the cream until it’s very hot but not boiling. Pour it over the chopped chocolate and let it sit for a couple of minutes, then stir until smooth. Add the butter and corn syrup and stir until glossy.400 g Dark chocolate , 320 ml Heavy cream, 2 tbsp Unsalted Butter, 2 tbsp Corn syrup or honey
- Cool to spreading consistency – Let the ganache sit at room temperature until it thickens to a soft, spreadable consistency. If your kitchen is warm, pop it in the fridge briefly and stir every few minutes so it thickens evenly.
- Assemble – Place one cake layer on a board or plate. Spread an even layer of ganache over the top, add the second layer, then cover the top and sides with the remaining ganache. Chill briefly if needed, then finish smoothing.
Notes
- This recipe is designed for one deep 8-inch pan. Slice once cooled if layering.
- Bake until the center is set; a slight dip as it cools is normal.
- Do not overbake — mud cake should remain moist.
- Let ganache cool to a spreadable consistency before frosting.
- Cake can be made a day ahead; flavor improves overnight.
- Unfrosted cake freezes well for up to 3 months.
Hi Veena,
Thank you so much for sharing all your recipes and tips and tricks of the trade. I’ve recently made this cake for my work collegues and these were the comments received
” Wow, this is the cake you want to sit and eat after you’ve spit up with your boyfried, you could sit and eat the whole thing”
” This is the sort of chocolate fix I look for when I’m pre menstrual but can never find it anywhere, until this cake”
” Best cake i’ve ever had”
I’ve also made your caramel apple cake with your american caramel buttercream. This also received amazing comments fro my work collegues.
I’m now all excited about trying out more of your recipes, but i’m specifically looking for those that would be sturdy enough for a 5 tier wedding cake. Are all your butter based recipes sturdy enough for a tiered wedding cake?
I’ve also read that you like to make your cakes at least 4 inches high, poss 6, do you bake in 2inch high cakes tins?
Sorry, one just more question…… i’m planning on making the bottom tier a 14inch vanilla cake, and have looked at your serving chart for wedding cakes and it says this will serve approx. 78 people, but when I type 56 in the “adjust Servings” setting on the recipe card it doesnt seem right. Please can you help.
One last thing, your expertize is invaluable and if i lived in Isreal i would be more than happy to pay for you to teach me what you know. You are amazing, an inspiration and selfless. Thankyou xx
Hey Julie.
Thank you so much for your lovely comments and compliments. Made my day.
Yes, all my butter-based cakes work great for tiered cake unless stated in the recipe.
Some recipes do bake tall, some will have to be doubled. Most recipes have the details.
What do you mean when you say it does not seem right? The recipe calculator will calculate the recipe per the servings.
However, you wont’ be making one recipe in a large pan and I’m sure you don’t have an oven to bake all of them at once.
So I highly recommend breaking those 76 servings into different pans or even different recipes for more variations.
Keeping batter out too long while the others are baking is not such a good idea.
I hope this helps. Thanks for your kind words.
If you do come to Israel it would be my pleasure to teach you
XXX
Please can you tell me any substitute for the brown sugar? Can i replace it with white instead? Also, is that possible to use this cake as a base for my barbie cake? will this get messed and fall apart or can it hold? My barbie upper part will be around 18cm x 2cm
Veer, you can use white sugar but it will have a different texture to the cake. Do you have molasses, you can add the white sugar and 2 tbsp of molasses. Yes, this will work in a barbie cake. Mud cakes are quite good but dense as well so will hold well.
Thank you very much for the reply!! Your reply gives us a boost to browse your site more and more and to be the regular reader. Thanks a ton!
You are very welcome Veer. Have a great day
In the video, something dark is added to the flour before you start melting the chocolate and butter together. Is this cocoa or something? It’s not in the recipe. Can’t wait to try this one.
Yes, Stephanie, It’s the cocoa powder. Sorry, I must have missed it in the new recipe card.. Thanks for bringing it to my attention. Just corrected.
This cake looks fantastic! I especially love that caramel butter cream. I am so hungry for sweets right now so you are driving my crazy with your photos. Also love lazy versions for people like me that are not as great of a baker as you!
Thank you, Denise. You will enjoy this very much. It’s so super easy too.
Just look at those perfectly even layers! I also love how chocolatey this is. I’m partial to lemony things myself but hard to say no to chocolate cake 🙂 Especially this one!
Thanks, Jolina. You will love this one.
This looks like a chocolate lovers dream cake. I know my daughter and husband would LOVE this as a birthday cake. I like the colour of the icing. Now, if I could only make my cakes look like yours.
Absolutely, Gloria. You MUST love chocolate to enjoy this cake. If you see my video, the cake is real simple.
I have got to try this cake. I’m sure my daughter and I will enjoy it as we are chocolate lovers. Pinning to try later!
Thank you, Mirlene. You will love this. Try it.
Honestly never tried chocolate mud cake before but now I am intrigued! And agree that high quality chocolate is the key for a delicious cake recipe
Thanks Tatiana. You must try this one.
Wow that has got to be one of the sexiest recipes ever. And watching that video made me drool. You have a real cake baking talent. This is perfect for special occasions, well done and keep up the fantastic work!
Thank you so much, Nicolas for your kind words. Yes, definitely perfect for a special occasion.
There is a big birthday party coming up in our family soon. This looks like the perfect cake to make for the birthday boy.
Thank you, Alexis. yes, this is perfect for a birthday celebration