This ridiculously easy chocolate cake is a delightful must-try for any chocolate lover. It takes about 40 minutes to whip up and serves about 8 to 10, making it the perfect dessert for gatherings, celebrations, or just because you deserve it! You may also find Guinness Chocolate Cake With Irish Buttercream useful.
The Story Behind
Have you ever had one of those days where you just need a piece of cake to make everything feel right again? Well, this chocolate cake is my go-to remedy. It’s rich, moist, and above all, incredibly simple to make. The star of the show? The Irish Cream buttercream frosting that adds a delightful kick to this scrumptious cake. Seriously, the combination of chocolate and a hint of Irish Cream? Pure magic! You’re about to learn how to impress your friends or just satisfy that sweet tooth.
5 Reasons You’ll Love This Recipe
- Quick and Easy: You can whip this up in no time, even on a busy weeknight!
- Decadent Flavor: The chocolate and Irish cream pairing is heavenly and just a bit indulgent.
- Flexible Ingredients: Adapt it to what you have at home, or try it with different flavors!
- Perfect for Any Occasion: Birthdays, holidays, or just a Tuesday, it works for all.
- Crowd-Pleaser: Everyone loves a good chocolate cake, and this one will be a hit!
Ingredients You’ll Need
Here’s a handy-dandy table with everything you need to make your cake and the delicious Irish Buttercream frosting.
| Ingredient | Quantity | Notes |
|---|---|---|
| CAKE BATTER | ||
| All-purpose flour | 1 cup | – |
| Sugar | 1 cup | – |
| Cocoa powder | 6 tablespoons | I use Hershey’s most of the time |
| Baking powder | 1 teaspoon | – |
| Baking soda | ¾ teaspoon | – |
| Kosher salt | ½ teaspoon | I use Morton |
| Buttermilk | ½ cup | – |
| Neutral flavored oil | ¼ cup | – |
| Large egg | 1 | – |
| Irish Cream liqueur | 2 tablespoons | Bailey’s or a generic brand, we love Costco’s version |
| Vanilla extract | 1 teaspoon | – |
| Hot tap water | ½ cup | – |
| FROSTING / GLAZE | ||
| Unsweetened chocolate | 2 ounces | – |
| Butter | 4 tablespoons | I use salted butter; if you use unsalted, add a pinch of salt |
| Irish Cream liqueur | 2 ½ tablespoons | – |
| Half and half | 2 tablespoons | Maybe a bit more |
| Vanilla extract | 1 teaspoon | – |
| Powdered sugar | 1 ½ cups | Maybe a bit more |
How to Make (Step-by-Step)
STEP 1: For the Cake
- Preheat your oven to 350°F (175°C) and prepare your cake pans.
- In a large mixing bowl, combine flour, sugar, cocoa powder, baking powder, baking soda, and salt.
- Add in the buttermilk, oil, egg, Irish Cream liqueur, and vanilla extract. Mix until fully combined (but don’t over-mix!).
- Stir in the hot water and melted unsweetened chocolate until the batter is smooth.
- Pour the batter into prepared pans and bake for 30-35 minutes. A toothpick inserted in the center should come out clean.
- Let the cakes cool in the pans for about 10 minutes before transferring them to a wire rack to cool completely.
STEP 2: For the Irish Buttercream
- In a large mixing bowl, beat the softened butter until creamy.
- Gradually add in the powdered sugar and half and half until the frosting reaches your desired consistency.
- Mix in the remaining Irish cream liqueur and vanilla extract until well combined.
Pro Tips for the Best Results
- Don’t skip the cooling time! This avoids a drippy mess when you apply icing.
- Sift your cocoa. It helps eliminate lumps and gives you a smoother batter.
- Use room temperature ingredients. This helps everything mix well and creates a lighter cake.
- Experiment with flavors. Try adding a bit of espresso powder for a mocha twist!
Fun Variations & Topping Ideas
Variations:
- Add Chocolate Chips: Fold in some chocolate chips in the batter for an extra chocolatey bite.
- Nutty Addition: Incorporate some chopped nuts for texture and a nod to indulgence.
Toppings:
- Fresh Berries: Strawberries or raspberries pair beautifully with chocolate.
- Chocolate Ganache: Drizzle over the top for that extra fancy touch.
Storing and Reheating
Storing:
- Store leftover cake in an airtight container at room temperature for up to 3 days or in the fridge for up to a week.
Reheating:
- Pop a slice in the microwave for about 10-15 seconds for a warm treat.
Leftover Ideas
If you find yourself with extra cake (which is a rare occurrence), crumbling it up can make for an amazing cake trifle! Layer it with whipped cream and fruit for a delightful dessert.
Frequently Asked Questions (FAQ)
How do I know when the cake is done?
A toothpick inserted into the center should come out clean.
Can I freeze this cake?
Absolutely! Wrap it well in plastic wrap and store in the freezer for up to 3 months.
What can I substitute for buttermilk?
You can use milk mixed with a tablespoon of vinegar or lemon juice and let it sit for a few minutes.
Can I make this cake without Irish Cream?
Sure! If you’re not into the Irish Cream thing, substitute it with milk or omit it altogether. Just keep it simple!

Conclusion
In summary, this ridiculously easy chocolate cake with Irish Buttercream is the perfect dessert for any weather, occasion, or mood! It’s incredibly easy to make, and the flavors are simply out of this world. Have you tried making it yet? Let me know how it turns out, and don’t forget to leave a comment and a rating!
For other fantastically luscious cakes, check out this Ridiculously Easy Chocolate Cake with Bailey’s Buttercream.

Ridiculously Easy Chocolate Cake with Irish Buttercream
Ingredients
For the Cake
- 1 cup All-purpose flour
- 1 cup Sugar
- 6 tablespoons Cocoa powder I use Hershey’s most of the time
- 1 teaspoon Baking powder
- ¾ teaspoon Baking soda
- ½ teaspoon Kosher salt I use Morton
- ½ cup Buttermilk
- ¼ cup Neutral flavored oil
- 1 large Egg
- 2 tablespoons Irish Cream liqueur Bailey’s or a generic brand, we love Costco’s version
- 1 teaspoon Vanilla extract
- ½ cup Hot tap water
- 2 ounces Unsweetened chocolate
For the Irish Buttercream
- 4 tablespoons Butter I use salted butter; if you use unsalted, add a pinch of salt
- 2½ tablespoons Irish Cream liqueur
- 2 tablespoons Half and half Maybe a bit more
- 1 teaspoon Vanilla extract
- 1½ cups Powdered sugar Maybe a bit more
Instructions
For the Cake
- Preheat your oven to 350°F (175°C) and prepare your cake pans.
- In a large mixing bowl, combine flour, sugar, cocoa powder, baking powder, baking soda, and salt.
- Add in the buttermilk, oil, egg, Irish Cream liqueur, and vanilla extract. Mix until fully combined (but don’t over-mix!).
- Stir in the hot water and melted unsweetened chocolate until the batter is smooth.
- Pour the batter into prepared pans and bake for 30-35 minutes. A toothpick inserted in the center should come out clean.
- Let the cakes cool in the pans for about 10 minutes before transferring them to a wire rack to cool completely.
For the Irish Buttercream
- In a large mixing bowl, beat the softened butter until creamy.
- Gradually add in the powdered sugar and half and half until the frosting reaches your desired consistency.
- Mix in the remaining Irish cream liqueur and vanilla extract until well combined.