This chocolate cake for two is one tender 6-inch layer, rich with cocoa and kept moist by buttermilk and a splash of hot coffee, finished with a glossy two-ingredient chocolate ganache. It makes a real cake, with a proper crumb and frosting, in a size that two people can actually finish. The batter comes together in two bowls with no mixer, and the ganache is just chocolate and cream. I sized the ganache to cover this one small cake, so there is no bowl of extra frosting sitting in the fridge afterward.
Why you’ll like this small chocolate cake
- The right size: two generous wedges, or four small slices to stretch over two evenings.
- No mixer needed: everything is whisked by hand.
- Deep chocolate flavor: natural cocoa, a little coffee and a ganache top.
- Moist crumb: buttermilk and oil keep it soft even the next day.
- Easy finish: the ganache needs only chocolate and cream, no powdered sugar or beating.
What makes this cake work for two
A 6-inch pan with tall sides. A 6-inch round cake pan with 2-inch sides is the natural size for two people. It holds this small amount of batter at a good depth, so the cake bakes evenly and rises into a proper layer instead of a thin disk. If you halve a recipe for an 8- or 9-inch cake instead, the batter spreads too thin and dries out.
Oil, buttermilk and coffee. Oil keeps a cake softer than butter does, especially once it has been chilled. Buttermilk adds tang and tenderness, and its acidity reacts with the baking soda for lift. A couple of tablespoons of hot coffee wakes up the cocoa and deepens the chocolate flavor; you will not taste coffee in the finished cake.
A small ganache. Most layer cakes call for a big batch of buttercream. For one small layer, 3 ounces of chocolate melted with a little cream is just enough to coat the top and drip down the sides. It sets to a soft, fudgy layer that slices cleanly.
Ingredients for chocolate cake for two
The full amounts are in the recipe card below. These are the choices that matter most:
- Natural cocoa powder: use regular unsweetened cocoa, not Dutch-processed. Natural cocoa is acidic and works with the baking soda to make the cake rise.
- All-purpose flour and sugar: half a cup of each is enough for one 6-inch layer.
- One egg: bring it to room temperature so it blends smoothly into the batter. Set it in a bowl of warm water for a few minutes if you forgot to take it out.
- Buttermilk: room-temperature buttermilk gives the softest crumb. See the swaps below if you do not have any.
- Vegetable oil: any neutral oil works, such as canola or sunflower.
- Hot coffee: freshly brewed or made with instant coffee; hot water is fine if you prefer.
- Semisweet chocolate and heavy cream: for the ganache. Chop the chocolate finely so it melts evenly; a good bar melts more smoothly than chips.
How to make chocolate cake for two
- Heat the oven to 350°F and grease and line a 6-inch round pan.
- Whisk the dry ingredients in one bowl and the wet ingredients in another.
- Combine just until smooth and pour into the pan.
- Bake for 30 minutes, until a toothpick comes out clean.
- Cool in the pan for 10 minutes, then completely on a rack, about 1 hour.
- Pour hot cream over the chopped chocolate, wait 5 minutes and stir into a ganache.
- Spread the ganache over the cooled cake and slice.
How to tell it is done
The bake: at 30 minutes, the top should spring back when you press it lightly, the edges should just be pulling away from the sides of the pan, and a toothpick pushed into the very center should come out clean, with no wet batter. A few dry crumbs are fine. Small cakes are easy to underbake, and an underbaked center sinks as it cools, so if the toothpick shows wet batter, give it a few more minutes and test again.
Cooling: the cake needs to be completely cool before the ganache goes on, or the ganache will slide off and soak in. Touch the bottom of the cake; it should feel cool, not warm.
Turning it out: after the first 10 minutes in the pan, run a thin knife all the way around the edge, set the rack on top of the pan and flip both together. Lift the pan away and peel off the parchment. If the top domed a little, you can leave it as it is, since the ganache covers it, or trim it level with a serrated knife and flip the cake so the flat bottom becomes the top for a neater finish.
The ganache: after resting with the hot cream for 5 minutes and being stirred smooth, it will look thin and shiny. Let it sit for 10 minutes to thicken, until it slowly coats a spoon. That is the moment to spread it.
Tips for a perfect small cake
- Measure the flour carefully. Spoon it into the cup and level it off; packed flour makes a small cake dry.
- Whisk out the cocoa lumps. Cocoa clumps easily, so whisk the dry ingredients well before adding the wet.
- Stop mixing when it is smooth. Overmixing makes the cake tough. The batter should be thin and pourable.
- Bake in the center of the oven. A small pan bakes most evenly in the middle.
- Line the pan. A parchment circle on the bottom makes the cake release cleanly every time.
Swaps and variations
- No buttermilk: stir a teaspoon of lemon juice into the same amount of milk and let it sit for 5 minutes before using.
- No coffee: use hot water. The cake will be a little less intensely chocolatey but just as moist.
- Two 4-inch pans: divide the batter between them and start checking a few minutes early, then stack them with ganache between the layers.
- Darker ganache: use bittersweet chocolate in place of semisweet for a less sweet topping.
How to serve it
Serve the cake at room temperature, when the ganache is soft and fudgy. A spoonful of lightly sweetened whipped cream, a scoop of vanilla ice cream or a few fresh raspberries or strawberries are all lovely alongside. For a birthday or an anniversary, a single candle on top is all the decoration it needs. Cut it in half for two big slices with coffee, or into quarters so there is a treat waiting for tomorrow too.
Storing chocolate cake for two
Keep the cake covered at room temperature for up to 1 day. Because the ganache is made with cream, refrigerate it for longer storage: cover it well and keep it in the fridge for up to 3 days. Let chilled slices sit at room temperature for a few minutes before serving so the ganache softens and the crumb tastes its best. While you are baking, resist tasting the raw batter, since it contains raw egg and flour.
Sometimes a whole cake is too much, and none at all is too little. This little chocolate cake sits right in between, made for two forks and one good moment.
Frequently asked questions
What chocolate frosting recipe are you using?
This cake uses a simple ganache of chopped semisweet chocolate melted with hot heavy cream. It needs no mixer and is sized to cover one 6-inch layer.
How many people does a 6-inch cake serve?
A single 6-inch layer serves two generously, or four if you cut smaller slices.
Can I use an 8-inch pan?
It is not a good fit. The batter would spread too thin and dry out; a 6-inch pan or two 4-inch pans keep the layer the right depth.
Print
Chocolate Cake for Two (Small 6-Inch Cake with Ganache)
- Total Time: 1 hour 55 minutes
- Yield: One 6-inch cake (2 servings)
Description
A small chocolate cake for two: one moist 6-inch layer with cocoa, buttermilk and a splash of coffee, topped with a simple chocolate ganache.
Ingredients
- 1/2 cup all-purpose flour
- 1/4 cup unsweetened natural cocoa powder
- 1/2 cup granulated sugar
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1 large egg, at room temperature
- 1/3 cup buttermilk, at room temperature
- 1/4 cup vegetable oil, plus more for the pan
- 2 tablespoons hot brewed coffee or hot water
- 1/2 teaspoon vanilla extract
- 3 ounces semisweet chocolate, finely chopped (for the ganache)
- 1/4 cup heavy cream (for the ganache)
Instructions
- Heat the oven to 350°F. Brush a 6-inch round cake pan with oil and line the bottom with a circle of parchment.
- In a medium bowl, whisk the flour, cocoa, sugar, baking soda and salt until no lumps of cocoa remain.
- In a second bowl, whisk the egg, buttermilk, oil, hot coffee and vanilla until smooth.
- Pour the wet ingredients into the dry and whisk just until smooth. The batter will be thin. Pour it into the pan.
- Bake for 30 minutes, until the top springs back when pressed lightly and a toothpick inserted in the center comes out clean.
- Cool in the pan for 10 minutes, then run a knife around the edge, turn the cake out onto a rack, peel off the parchment and let it cool completely, about 1 hour.
- For the ganache, heat the cream until steaming (on the stove or in the microwave) and pour it over the chopped chocolate. Let it sit for 5 minutes, then stir until smooth and glossy. Let it thicken for 10 minutes.
- Set the cooled cake on a plate and spread the ganache over the top, letting a little drip down the sides. Slice and serve.
Notes
Equipment: 6-inch round cake pan with 2-inch sides, parchment paper, 2 mixing bowls, whisk, toothpick, cooling rack, small saucepan or microwave-safe cup
- Use natural (not Dutch-processed) cocoa so it reacts with the baking soda.
- The coffee deepens the chocolate flavor without tasting like coffee; hot water works too.
- No buttermilk? Stir 1 teaspoon lemon juice into 1/3 cup milk and let it sit for 5 minutes.
- Two 4-inch pans also work; start checking them a few minutes early.
- Keep the cake covered at room temperature for up to 1 day.
- For longer storage, cover and refrigerate for up to 3 days; let slices sit at room temperature for a few minutes before serving.
- Do not taste the raw batter, which contains raw egg and flour (FDA).
- Prep Time: 15 minutes
- Rest Time: 1 hour 10 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
