Chocolate cake gets a major upgrade when you add a splash of Guinness. The stout deepens the cocoa flavor and keeps the crumb unbelievably moist without tasting like beer. This is the kind of cake that feels special but doesn’t ask for fancy techniques or equipment.
You’ll mix, bake, and frost—and then watch it disappear slice by slice. If you love a classic chocolate cake with a grown-up twist, this one’s a keeper.
What Makes This Special
This cake stands out for its rich chocolate flavor and tender, almost velvety texture. The Guinness doesn’t make it taste boozy; it adds a gentle bitterness that balances the sweetness.
The frosting brings everything together with a creamy, tangy finish that pairs beautifully with the cake’s depth. It’s simple enough for a weeknight bake, yet elegant enough for holidays, birthdays, or dinner parties. You can bake it in a round, square, or even cupcake form—whatever suits your plans.
Ingredients
- For the Cake:
- 1 cup (240 ml) Guinness stout, room temperature
- 10 tablespoons (140 g) unsalted butter
- 3/4 cup (75 g) unsweetened cocoa powder
- 2 cups (400 g) granulated sugar
- 1/2 cup (120 ml) sour cream, room temperature
- 2 large eggs, room temperature
- 2 teaspoons vanilla extract
- 2 cups (250 g) all-purpose flour
- 1 1/2 teaspoons baking soda
- 1/2 teaspoon fine sea salt
- For the Creamy Frosting:
- 8 ounces (225 g) cream cheese, softened
- 1/2 cup (115 g) unsalted butter, softened
- 2 1/2 to 3 cups (300–360 g) powdered sugar, sifted
- 1 teaspoon vanilla extract
- Pinch of salt
- 1–2 tablespoons milk or cream, as needed for consistency
Step-by-Step Instructions
- Prep the pan and oven. Heat the oven to 350°F (175°C).
Grease a 9-inch round springform pan or a 9×13-inch pan. Line the bottom with parchment and lightly flour the sides.
- Warm the Guinness and butter. In a medium saucepan over low heat, combine the Guinness and butter. Warm until the butter melts, then remove from heat.
Whisk in the cocoa powder and sugar until smooth.
- Mix the wet ingredients. In a separate bowl, whisk together sour cream, eggs, and vanilla until well combined and silky.
- Combine wet with chocolate base. Slowly whisk the sour cream mixture into the warm chocolate mixture. It should look glossy and uniform.
- Add the dry ingredients. In another bowl, whisk flour, baking soda, and salt. Sift if lumpy.
Gently fold this into the batter in two additions. Mix just until no dry streaks remain to keep the crumb tender.
- Pour and bake. Pour the batter into the prepared pan. Bake for 45–55 minutes for a 9-inch round, or 30–35 minutes for a 9×13-inch pan.
The cake is done when a toothpick comes out with a few moist crumbs.
- Cool completely. Let the cake cool in the pan for 15 minutes, then transfer to a wire rack. Cool fully before frosting so the frosting stays smooth and doesn’t melt.
- Make the frosting. Beat cream cheese and butter together until fluffy and smooth, about 2–3 minutes. Add powdered sugar gradually, then vanilla and a pinch of salt.
Add 1–2 tablespoons milk or cream to reach a spreadable consistency.
- Frost generously. Spread a thick layer of frosting over the cooled cake. Aim for soft swoops rather than overworking it—this keeps it airy and elegant.
- Rest, slice, and serve. For the cleanest slices, chill the frosted cake for 20–30 minutes, then cut with a warm, sharp knife. Serve slightly cool or at room temperature.
Keeping It Fresh
Store the frosted cake in an airtight container in the fridge for up to 4 days.
Let slices sit at room temperature for 20–30 minutes before serving for the best texture. You can also freeze unfrosted cake layers, tightly wrapped, for up to 2 months. Thaw in the fridge overnight, then bring to room temperature and frost.
Health Benefits
- Cocoa contains antioxidants that may support heart health in moderation.
- Moderate sugar balance is possible: this recipe is rich, so small portions satisfy cravings without overdoing it.
- Protein and calcium from cream cheese and sour cream contribute to a more balanced dessert.
- Mindful ingredients: using quality butter, pure vanilla, and real cocoa means bigger flavor, so you can enjoy less.
This is still a treat, of course.
Enjoy it as part of a balanced approach to sweets.
Common Mistakes to Avoid
- Overmixing the batter. This can make the cake dense. Stop as soon as the flour is incorporated.
- Not cooling the cake before frosting. Warm cake melts frosting and leads to sliding layers and a greasy finish.
- Substituting Dutch-process cocoa without adjusting. Natural cocoa plus baking soda is ideal here. If you only have Dutch-process, reduce the baking soda slightly and add 1/2 teaspoon baking powder.
- Using cold dairy. Cold sour cream and eggs can seize the butter mixture and cause lumps.
Room temperature ingredients blend better.
- Overbaking. Pull the cake when a toothpick shows moist crumbs, not a dry stick. A slightly underbaked look at the center sets as it cools.
Variations You Can Try
- Cupcakes: Divide batter into lined muffin tins, filling about two-thirds full. Bake 18–22 minutes.
Frost with a generous swirl.
- Chocolate glaze finish: Skip the cream cheese frosting and pour a warm ganache (chocolate and cream) over the cooled cake for a glossy look.
- Mocha twist: Add 1 teaspoon instant espresso powder to the cocoa for deeper coffee notes.
- Salted caramel accent: Drizzle salted caramel over the frosted cake and sprinkle a pinch of flaky sea salt.
- Orange zest lift: Add 1 tablespoon fresh orange zest to the batter for a bright, subtle citrus aroma.
- Dairy-light option: Swap sour cream for plain Greek yogurt and reduce frosting to a thinner layer.
Explore more irresistible cake recipes you won’t want to miss:
FAQ
Can I taste the Guinness in the cake?
Not in a boozy way. The stout enhances the chocolate and adds moisture and depth, but the final flavor is rich chocolate with softly bitter undertones.
What can I use instead of Guinness?
Another stout or dark porter works well. For a non-alcoholic version, try a malty non-alcoholic stout or strong brewed coffee with a splash of molasses for body.
Do I have to use cream cheese frosting?
No.
Buttercream, whipped cream, or a simple ganache all pair nicely. Cream cheese offers tang that balances the cake’s richness, which is why it’s a favorite here.
Can I make this ahead?
Yes. Bake the cake a day ahead, wrap once cooled, and refrigerate.
Frost close to serving time for the freshest look and texture.
How do I prevent a domed top?
Use baking strips around the pan for even heat or reduce oven temperature to 340°F (170°C) and extend baking a few minutes. Level with a serrated knife if needed.
Is this safe for kids?
The alcohol bakes off mostly, but if you’re concerned, use a non-alcoholic stout or the coffee-molasses swap. The flavor stays rich and satisfying.
Can I make this gluten-free?
Yes.
Use a 1:1 gluten-free flour blend with xanthan gum. Check that your stout substitute is gluten-free; many beers are not.
How do I get super smooth frosting?
Start with room-temperature butter and cream cheese, sift the sugar, and beat until fluffy. If it’s too thick, add milk a teaspoon at a time.
Chill briefly before spreading if it feels loose.
Final Thoughts
This Moist Chocolate Guinness Cake with Creamy Frosting nails that sweet spot between simple and show-stopping. The batter comes together easily, the crumb stays tender for days, and the frosting adds just the right tangy richness. Keep it classic, or try one of the variations to make it your own.
Either way, expect requests for seconds—and the recipe.
Moist Chocolate Guinness Cake with Creamy Frosting – Rich, Tender, and Crowd-Pleasing
Ingredients
- For the Cake:
- 1 cup (240 ml) Guinness stout, room temperature
- 10 tablespoons (140 g) unsalted butter
- 3/4 cup (75 g) unsweetened cocoa powder
- 2 cups (400 g) granulated sugar
- 1/2 cup (120 ml) sour cream, room temperature
- 2 large eggs, room temperature
- 2 teaspoons vanilla extract
- 2 cups (250 g) all-purpose flour
- 1 1/2 teaspoons baking soda
- 1/2 teaspoon fine sea salt
- For the Creamy Frosting:
- 8 ounces (225 g) cream cheese, softened
- 1/2 cup (115 g) unsalted butter, softened
- 2 1/2 to 3 cups (300–360 g) powdered sugar, sifted
- 1 teaspoon vanilla extract
- Pinch of salt
- 1–2 tablespoons milk or cream, as needed for consistency
Instructions
- Prep the pan and oven. Heat the oven to 350°F (175°C).Grease a 9-inch round springform pan or a 9×13-inch pan. Line the bottom with parchment and lightly flour the sides.
- Warm the Guinness and butter. In a medium saucepan over low heat, combine the Guinness and butter. Warm until the butter melts, then remove from heat.Whisk in the cocoa powder and sugar until smooth.
- Mix the wet ingredients. In a separate bowl, whisk together sour cream, eggs, and vanilla until well combined and silky.
- Combine wet with chocolate base. Slowly whisk the sour cream mixture into the warm chocolate mixture. It should look glossy and uniform.
- Add the dry ingredients. In another bowl, whisk flour, baking soda, and salt. Sift if lumpy.Gently fold this into the batter in two additions. Mix just until no dry streaks remain to keep the crumb tender.
- Pour and bake. Pour the batter into the prepared pan. Bake for 45–55 minutes for a 9-inch round, or 30–35 minutes for a 9×13-inch pan.The cake is done when a toothpick comes out with a few moist crumbs.
- Cool completely. Let the cake cool in the pan for 15 minutes, then transfer to a wire rack. Cool fully before frosting so the frosting stays smooth and doesn’t melt.
- Make the frosting. Beat cream cheese and butter together until fluffy and smooth, about 2–3 minutes. Add powdered sugar gradually, then vanilla and a pinch of salt.Add 1–2 tablespoons milk or cream to reach a spreadable consistency.
- Frost generously. Spread a thick layer of frosting over the cooled cake. Aim for soft swoops rather than overworking it—this keeps it airy and elegant.
- Rest, slice, and serve. For the cleanest slices, chill the frosted cake for 20–30 minutes, then cut with a warm, sharp knife. Serve slightly cool or at room temperature.