I just pulled the cakes out of the oven, and the kitchen smells like a chocolate dream. Seriously, I’m not sure how much longer I can wait before diving in. Guinness Chocolate Cake is about to be my new go-to dessert.

This one’s perfect for nights when you’ve got friends coming over and no dessert plan. It’s rich and moist, thanks to that Guinness, which adds depth without making it taste boozy (trust me on this). You won’t even need fancy tools — just a couple of bowls and your trusty whisk. Let’s get baking!
Why You’ll Love This Guinness Chocolate Cake
- Super Easy: Just mix a few ingredients in one pot, and you’re good to go — no fancy skills needed.
- Rich Flavor: It’s got that deep, chocolatey goodness with a hint of stout that makes it stand out from the crowd.
- Moist Texture: Seriously, this cake is melt-in-your-mouth moist, thanks to the buttermilk and Guinness combo (trust me on this).
- Versatile Serving: Great for birthdays or just because — dress it up with fancy frosting or keep it simple with powdered sugar.
- Caveat Alert: It’s best enjoyed fresh; after a day or two, the texture can get a little dense, but who’s really waiting that long?
Guinness Chocolate Cake Ingredients
For the Base:
Guinness stout (1 cup) — Use an Irish stout like Guinness for depth; others won’t give the same rich flavor.
all-purpose flour (1 3/4 cups) — Don’t swap in whole wheat flour or it’ll be dense and heavy.
granulated sugar (1 1/2 cups) — Stick with granulated sugar; brown sugar will throw off the cake’s texture.
unsweetened cocoa powder (3/4 cup) — Grab a good quality cocoa like Ghirardelli; cheap stuff’ll taste bitter and flat.
baking soda (1 teaspoon) — Don’t skip the baking soda or the cake won’t rise properly.
salt (1/2 teaspoon) — Use fine sea salt for balanced flavor; table salt’s too harsh in this recipe.
buttermilk (1 cup) — Homemade buttermilk works, but don’t ditch it for regular milk—it needs that tang.
vegetable oil (1/2 cup) — Stick to vegetable oil for moisture; olive oil’s too strong and funky here.
eggs (2 large) — Use large eggs; if they’re too small, your cake might end up dry.
vanilla extract (2 teaspoons) — Don’t cheap out on vanilla extract; imitation’s got that weird aftertaste.
For the Frosting:
cream cheese (8 oz) — Go for block cream cheese; the spreadable kind’s too watery for frosting.
unsalted butter (1/2 cup) — Unsalted butter’s best for control over saltiness; salted butter will mess with the flavor.
powdered sugar (4 cups) — Powdered sugar’s a must for smooth frosting; granulated sugar will ruin the texture.
Guinness stout (1/4 cup)
Full measurements in the recipe card below.
How to Make Guinness Chocolate Cake
1. Prep the pans: Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans so your cakes won’t stick.
2. Melt together: In a large saucepan, combine the Guinness stout and butter over medium heat. Stir until melted and combined, then you’ll smell that rich, malty goodness.
3. Mix dry ingredients: Remove from heat and whisk in the cocoa powder, flour, sugar, baking soda, and salt until well combined. The mixture should look smooth and chocolatey.
4. Combine wet ingredients: In a separate bowl, whisk together the buttermilk, eggs, and vanilla extract. Add this to the Guinness mixture and mix until smooth — don’t rush this step or you might end up with lumps.
5. Divide batter: Pour the batter evenly between the prepared cake pans. You’ll know it’s ready when it looks glossy and thick.
6. Bake cakes: Bake in the preheated oven for 35-40 minutes or until a toothpick inserted into the center comes out clean (watch out for underbaking; nobody likes gooey cake).
7. Cool completely: Let the cakes cool in the pans for 10 minutes before turning them out onto wire racks to cool completely — it’s hard to frost warm cake without making a mess!
Exact quantities in the recipe card below.
How to Store Guinness Chocolate Cake
- Room Temperature: Keep it in an airtight container or wrap it tightly with plastic wrap. It’ll last about 2 days, but the frosting might lose some of its fresh creaminess.
- Refrigerator: Store in a covered cake dome or wrapped well in plastic. It’ll stay good for up to a week, but the cake can dry out a bit over time (trust me on this).
- Freezer: Wrap individual slices in plastic wrap and then place them in a freezer bag. You can freeze them for up to 3 months. Just remember that the texture may change slightly after thawing.
- Reheating: If you want to warm it up, pop a slice in the microwave for about 10-15 seconds. You’re looking for that melty-gooey frosting again — don’t let it get too hot or it’ll dry out!
What to Serve with Guinness Chocolate Cake?
This cake is rich and chocolatey enough to steal the show, but a few sides can help lighten things up.
- Vanilla Ice Cream: The cold, creamy texture balances the dense cake and makes each bite feel lighter.
- Fresh Berries: Their tartness cuts through the sweetness, adding a refreshing touch that brightens every forkful.
- Espresso or Coffee: A hot cup of coffee enhances the chocolate flavor while providing a warm contrast to the chilled frosting.
- Caramel Sauce: Drizzle this on top for a sticky-sweet addition that adds rich depth without overwhelming it. (Make it in under 15 minutes!)
- Whipped Cream: Lighten up each slice with fluffy whipped cream; its airy texture complements the cake’s density perfectly. (You can whip it in just 5 minutes.)
- Mint Leaves: Fresh mint adds a pop of color and invigorating flavor that refreshes your palate between bites.
- Chocolate-Covered Pretzels: Their salty crunch offers an unexpected texture contrast that pairs surprisingly well with all that sweetness.
Guinness Chocolate Cake Variations
Here’s how to play with this recipe and make it your own.
- Coffee Boost: Add 1 cup brewed coffee to the Guinness for an extra rich flavor.
- Minty Twist: Stir in 1 teaspoon peppermint extract with the vanilla for a refreshing kick.
- Nutty Crunch: Fold in 1/2 cup chopped walnuts or pecans into the batter before baking for added texture.
- Dairy-Free Option: Swap buttermilk with almond milk (add 1 tsp lemon juice) for a lighter version.
- Chocolate Overload: Mix in 1 cup chocolate chips before pouring into the pans for melty pockets of goodness.
- Spicy Kick: Add 1 teaspoon cinnamon or cayenne pepper when whisking dry ingredients for a warm spice note.
- Layered Delight: Bake and stack with your favorite jam between layers, like raspberry, for a fruity surprise!
Make Ahead Options for Guinness Chocolate Cake
I usually make the Guinness Chocolate Cake a day ahead. The layers hold up well in the fridge for about 3 days, so I wrap them tightly in plastic wrap and store them in an airtight container. The frosting can also be prepped ahead — just keep it in a separate container in the fridge. I always wait to frost the cake until right before serving; otherwise, it can get a bit too soft as it sits. (Trust me, no one wants a sliding frosting situation.) So, bake those layers ahead of time, but finish with the frosting fresh! Just remember: the cake layers are your friends; the frosted version is more delicate. Enjoy every bite!
Guinness Chocolate Cake Recipe FAQs
Can I make Guinness Chocolate Cake ahead of time?
Absolutely! You can bake the cakes a day or two in advance. Just let them cool completely, wrap them tightly in plastic wrap, and store them at room temperature. For the best frosting results, whip up the frosting on the day you plan to serve it. (Trust me, it tastes fresher that way.) Just keep an eye on the cakes; if they start to feel too dry, you might need a touch of simple syrup when assembling.
Why did my cake turn out dense?
If your cake’s dense, it might be due to using whole wheat flour or brown sugar instead of granulated sugar. Another culprit could be overmixing the batter after adding wet ingredients — that can lead to tough texture. Make sure you’re whisking gently until just combined. You’ll know it’s right when the batter looks smooth and glossy (like melted chocolate!).
What can I substitute for buttermilk in this recipe?
You can make a quick homemade version by mixing one cup of milk with a tablespoon of vinegar or lemon juice. Let it sit for about 5-10 minutes until it curdles slightly; then, it’s ready to use! But don’t skip this step—regular milk won’t give that tangy flavor this dish needs for balance.
How do I store leftover Guinness Chocolate Cake?
Store any leftover cake in an airtight container at room temperature for up to three days. If you want to keep it longer, pop it in the fridge where it’ll last about a week (but I doubt it’ll last that long). Just let it come back to room temp before digging in again; cold cake isn’t as fun!
Final Thoughts on Guinness Chocolate Cake
The real star of this Guinness Chocolate Cake is the depth of flavor you get from using a good Irish stout. It adds this rich, complex taste that just can’t be matched by anything else. If you’re looking for a cake that stands out and makes an impression, this is it. So, if you’ve been putting it off, tonight’s the night. I’d love to hear how yours turned out, so drop a comment and let me know!

Guinness Chocolate Cake
Ingredients
Method
- Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
- In a large saucepan, combine the Guinness and butter over medium heat. Stir until melted and combined.
- Remove from heat and whisk in the cocoa powder, flour, sugar, baking soda, and salt until well combined.
- In a separate bowl, whisk together the buttermilk, eggs, and vanilla extract. Add to the Guinness mixture and mix until smooth.
- Divide the batter evenly between the prepared cake pans.
- Bake in the preheated oven for 35-40 minutes, or until a toothpick inserted into the center comes out clean.
- Let the cakes cool in the pans for 10 minutes, then turn them out onto wire racks to cool completely.
- In a mixing bowl, beat together the softened cream cheese and butter until smooth and creamy.
- Gradually add the powdered sugar, mixing until fully incorporated.
- Mix in the Guinness until the frosting is smooth and spreadable.
- Once the cakes are completely cool, place one layer on a serving plate.
- Spread a generous amount of frosting on top of the first layer.
- Place the second layer on top and frost the top and sides of the cake.
- Optional: Decorate with chocolate shavings or additional frosting decorations.


