Fudge Chocolate Cake is the kind of ultra moist chocolate layer cake I make when I want something unapologetically rich. It bakes up soft and dark, and it holds up nicely under a thick layer of fudge chocolate frosting.
The cake itself tastes like deep cocoa with a little extra boost from coffee, and the crumb stays tender for days. The frosting is glossy, fluffy, and very chocolate-forward, which is exactly what I want on a two-layer chocolate cake.
I usually serve this as a birthday cake or whenever I need a reliable dessert that slices cleanly. It’s especially good with a cold glass of milk or a cup of coffee on the side.
Why You’ll Love This Recipe
Super moist layers: The crumb stays soft and tender, and it doesn’t dry out the next day like some chocolate cakes do.
Deep chocolate flavor: Cocoa plus hot coffee gives you that darker, richer chocolate taste I always want in a layer cake.
Frosting you can actually spread: This fudge frosting beats up smooth and fluffy, and it’s easy to adjust with a little extra cream if you need it.
Clean slices: A quick chill after frosting helps the layers cut neatly, which makes serving simpler.
Works as cupcakes too: Same batter, same frosting, just a different bake time when you need something more grab-and-go.
Ingredients You’ll Need
Chocolate Cake
- All-purpose flour: I use regular AP flour here. Spoon and level if you tend to over-pack your measuring cup.
- Granulated sugar: This gives the cake sweetness and helps keep the texture soft.
- Unsweetened cocoa powder: Use a cocoa you like the taste of, since it’s doing a lot of work here. Natural cocoa is what I reach for most often.
- Baking powder: Helps the layers rise evenly and bake up light.
- Baking soda: Works with the buttermilk and cocoa to give the cake a good lift.
- Fine salt: Don’t skip it. It keeps the chocolate flavor from tasting flat.
- Eggs: Two large eggs is the right amount for structure without making the cake feel heavy.
- Buttermilk: This is what makes the crumb tender. If you don’t have it, the milk + lemon juice swap works well.
- Neutral oil: Oil keeps the cake moist in a way butter-based cakes don’t. Canola, vegetable, or avocado oil all work.
- Vanilla extract: Just enough to round out the cocoa and frosting.
- Hot coffee or hot water: Coffee gives a deeper chocolate flavor, but hot water still works if you want to keep it simple.
Fudge Chocolate Frosting
- Unsalted butter: Softened butter makes a smooth frosting. If it’s too cold, you’ll fight lumps.
- Powdered sugar: Sifting helps a lot here, especially if your sugar is clumpy.
- Unsweetened cocoa powder: This is the main chocolate flavor in the frosting, so use one you like.
- Heavy cream: Cream makes the frosting fluffy and spreadable. Add a small splash more if it feels stiff.
- Vanilla extract: Helps the frosting taste more rounded and less one-note.
- Fine salt: A little salt makes the chocolate taste stronger and keeps the sweetness in check.
Recipe Instructions
- Preheat the oven: Heat the oven to 350°F. Grease and line two 9-inch round cake pans.
- Mix the dry ingredients: Whisk the flour, sugar, cocoa powder, baking powder, baking soda, and salt together in a large bowl.
- Add the wet ingredients: Add the eggs, buttermilk, oil, and vanilla, then mix until smooth and no dry streaks remain.
- Add the hot coffee: Slowly mix in the hot coffee (or hot water) until the batter is thin and uniform.
- Bake: Divide the batter evenly between the pans and bake for about 35 minutes, until a toothpick comes out with a few moist crumbs.
- Cool the cake: Cool in the pans for 10 minutes, then turn out onto a rack and cool completely before frosting.
- Beat the butter: Beat the softened butter until creamy.
- Add the sugar and cocoa: Sift in the powdered sugar and cocoa powder, then beat on low at first and then on medium until combined.
- Add the cream: Add the heavy cream, vanilla, and salt, then beat until fluffy and spreadable. Add another splash of cream if needed.
- Frost the cake: Level the cake layers if you want, then frost one layer, add the second layer, and frost the top and sides.
- Chill and serve: Chill the cake for 20 minutes for cleaner slices, then serve.
Some of my tips!
This is the part that really makes a difference. If you only read one section, make it this one because this is where I share the little trick that helps the recipe turn out so well.
Recipe Tips & Tricks
Use hot coffee if you can. It doesn’t make the cake taste like coffee, but it does make the chocolate taste darker and more “fudgy.” Hot water works too, but coffee is my preference.
Don’t worry if the batter looks thin. After the hot coffee goes in, it’s supposed to be loose. That’s part of why the finished cake stays so moist.
Cool the layers all the way. If there’s any warmth left in the cake, the butter in the frosting will start to melt and you’ll be fighting it the whole time.
Sift the cocoa and powdered sugar for the frosting. It saves you from little cocoa lumps that never quite beat out.
Add cream slowly. A little goes a long way, and it’s easier to thin a thick frosting than it is to fix one that’s too loose.
Make some touches!
There are plenty of easy ways to serve this depending on the occasion. Keep it simple, or add a few small touches to make it feel a little more special.
Serving Suggestions
- Milk: A cold glass of milk is classic with this kind of rich chocolate cake. It’s the easiest way to keep the plate simple.
- Coffee or espresso: This cake is great with coffee, especially if you used hot coffee in the batter. I like it with black coffee or a cappuccino.
- Fresh berries: Strawberries, raspberries, or cherries are nice on the side. They make the slice feel a little less heavy.
- Ice cream: Vanilla ice cream next to a slice is always a good idea. Let the cake sit at room temp for a few minutes first so it’s softer.
Save it for later
This section covers how to store leftovers and what parts of the recipe you can prepare ahead of time.
Storage and Make Ahead
Store leftover cake covered at room temperature for 1 to 2 days, if your kitchen isn’t too warm. After that, I usually move it to the fridge so the frosting stays firm.
Store leftovers covered in the fridge for up to 4 days. Let slices sit out for 20 to 30 minutes before serving so the cake softens up again.
You can make the layers ahead and frost later. Wrap cooled layers well, then frost the next day when you have time.
If you want it to last longer, freeze individual slices or freeze a wrapped, unfrosted layer. Thaw in the fridge overnight and bring to room temp before serving.
A few quick answers
This section covers a few extra details that may help before you head to the recipe card.
Recipe FAQs
Can I use hot water instead of coffee?
Yes. Hot water works fine and the cake will still be very chocolatey. I prefer coffee because it makes the cocoa taste deeper, but it won’t taste like mocha either way.
What’s the easiest buttermilk substitute?
Use 1 cup milk plus 1 tablespoon lemon juice (or white vinegar), then let it sit for about 5 minutes. It won’t be exactly the same as real buttermilk, but it works well in this cake.
How do I know when the cake layers are done?
I look for a toothpick to come out with a few moist crumbs, not wet batter. The tops should spring back lightly when you touch them.
Can I make this into cupcakes?
Yes. Bake at 350°F for about 18 to 22 minutes, and start checking early since cupcake pans and ovens vary. Let them cool completely before frosting.
Why did my frosting turn out too thick?
That usually just means it needs a little more cream. Add a small splash at a time and beat again until it’s smooth and spreadable.
You might also like
Before you go, take a look at a few other recipes below the recipe card. They use similar ingredients in a different way and are worth saving too.
MORE DINNER RECIPES TO TRY
Fudge Chocolate Cake
INGREDIENTS
Chocolate Cake
- 2 cups all purpose flour
- 2 cups granulated sugar
- 3/4 cup unsweetened cocoa powder
- 2 tsp baking powder
- 1 1/2 tsp baking soda
- 1 tsp fine salt
- 2 large eggs
- 1 cup buttermilk
- 1/2 cup neutral oil
- 2 tsp vanilla extract
- 1 cup hot coffee or hot water.
Fudge Chocolate Frosting
- 1 cup unsalted butter softened
- 3 1/2 cups powdered sugar
- 3/4 cup unsweetened cocoa powder
- 1/2 cup heavy cream plus more as needed
- 2 tsp vanilla extract
- 1/4 tsp fine salt.
INSTRUCTIONS
Chocolate Cake
- heat oven to 350 F and grease and line two 9 inch round pans
- whisk flour sugar cocoa baking powder baking soda and salt
- add eggs buttermilk oil and vanilla then mix until smooth
- slowly mix in hot coffee until batter is thin and uniform
- divide batter evenly and bake until a toothpick comes out with a few moist crumbs
- cool in pans 10 minutes then turn out and cool completely.
Fudge Chocolate Frosting
- beat butter until creamy
- sift in powdered sugar and cocoa and beat on low then medium
- add cream vanilla and salt and beat until fluffy and spreadable adding a splash more cream if needed.
Assemble
- level cake layers if desired
- frost one layer add second layer and frost top and sides
- chill 20 minutes for cleaner slices then serve.
