Easy Irish Cocktail Cupcakes

These Easy Irish Cocktail Cupcakes are inspired by the Irish Car Bomb Cocktail. You will start with a box cake mix and turn it into unbelievably delicious spiked cupcakes. The combination of Irish Whiskey, Irish Cream, and Guinness Beer makes these cupcakes a special treat your friends and family will be delighted with!

an irish car bomb cupcake

I am thrilled to share with you this recipe for Easy Irish Cocktail Cupcakes. They are not just any cupcakes! They are infused with Guinness Beer, Irish Whiskey, and my favorite, Bailey’s Irish Cream! Whoa, Nelly, these are good!

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What is an Irish Cocktail?

An Irish Cocktail, usually known as an Irish Car Bomb, is a cocktail prepared by serving a pint of stout Guinness Beer and dropping in a shot glass layered with Bailey’s Irish Cream and Irish Whiskey. Needless to say, it packs a punch! I certainly will not be drinking one of these, but I will be having some of these cupcakes deliciously inspired by the Irish Car Bomb Cocktail.

homemade irish car bomb cupcakes

If you’re intrigued, make sure to also try my Instant Pot Irish Cocktail Chocoflan. It is amazing! But for now, back to these ridiculously yummy cupcakes.

Why Use a Box Cake Mix?

Why not? I mean, even bakeries use box cake mixes. Did you know that? Yes, they do, they just spruce them up a bit to make them fancier. With 5 kids, and sometimes 10 of us in the house at once, things need to be easy! I love easy. Heads up, we will also be using a premade frosting! Oh, the travesty!! Trust me, these end up like gourmet cupcakes when all is said and done.

irish car bomb cupcakes

For this recipe, you will start with a box cake mix and add Guinness Beer to it instead of the water. If you haven’t had a chocolate cake made with Guinness Beer before, you have no idea what you’re missing! There is absolutely no beer taste in the cake. On the contrary, the chocolate flavor is enhanced and there is all kinds of fluffiness going on!

Essential Items

Here are some essential prep tools, utensils, and appliances I used to make this recipe.

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Prep Tools & Utensils

Here are the prep tools and utensils that you’ll need:

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What Kind of Frosting Should I Use?

As for the frosting, as I mentioned above, I use a tub of pre-made frosting. For the inside of the cupcake, you will need chocolate frosting. You will be spiking it with whiskey! The cupcake is topped with Buttercream Bailey’s frosting. If you want to make your own buttercream icing you can absolutely do that.

an irish car bomb cupcake cut in half revealing the whiskey chocolate filling inside

For this recipe, I bought a tub of Pillsbury Buttercream frosting and mixed it with the Bailey’s. At my store, I did not find any other brand of pre-made buttercream frosting. The Pillsbury one was the only one, and it was delicious.

These Irish Cocktail Cupcakes make a perfect treat for St. Patrick’s Day! But let’s be honest, they’re so good, you’ll want to make them year-round!

 irish car bomb cupcake next to a bottle of guinness and irish whiskey

You are going to be so impressed with these semi-homemade Irish Cocktail Cupcakes! I would love to hear about it in the comments when you try them!

Irish Cocktail Cupcakes


4.27 from 49 votes
12 cupcakes
Cooking Method(s)
  • Baking
Prep Time
10 minutes
Cook Time
20 minutes
Total Time
30 minutes
Recipe by: Valerie Cooper
These Irish Cocktail cupcakes deliver the same amazing taste with much less effort. Perfect to serve as a last-minute sweet treat at your next adult gathering.
an irish car bomb cupcake

Essential Equipment


for the Cupcake Batter

for the Chocolate Whiskey Filling

for the Bailey’s Buttercream Frosting


mix & bake the Cupcakes

  • Prepare the cake batter following the instructions on the back of the box replacing the water for the Guinness beer. I use either Duncan Hines Devil’s Food or Pillsbury Devil’s Food cake mix. Both call for 1 cup of water which I substitute with 1 cup of Guinness.
  • Fill a cupcake pan with the batter and cook according to the instructions on the box.
  • Take the cupcakes out of the oven and allow to cool for 10 minutes.
  • While the cupcakes are cooling, prepare the cupcake filling and frosting.

prepare the Cupcake Filling & Frosting

  • For the cupcake filling, add the chocolate frosting (I use Duncan Hines Dark Chocolate Fudge) and Jameson Irish Whiskey to a mixing bowl and mix with a hand mixer on low to medium speed until the whiskey is fully incorporated into the frosting.
  • For the frosting, add the buttercream frosting (I used Betty Crocker Butter Cream) and Bailey’s Irish Cream to a mixing bowl and mix with a hand mixer on low to medium speed until the Bailey’s is fully incorporated into the frosting.

make them Cocktail Cupcakes

  • Now, core the cupcakes by inserting a knife about halfway in from the top of the cupcake and cut out a circle. Then, using the knife or a small spoon, scoop out the middle of the cupcake about halfway down into the cupcake. I use a cupcake corer to make this task easier. Now fill the cupcake with the whiskey infused chocolate frosting.
  • Next, add the buttercream frosting to a piping bag and decorate the top of the cupcake with the Bailey’s buttercream.
  • Serve and enjoy these wonderfully easy Irish Cocktail Cupcakes.

Nutrition Facts

Serving: 1cupcake | Calories: 362kcal | Carbohydrates: 58g | Protein: 2g | Fat: 14g | Saturated Fat: 3g | Sodium: 384mg | Potassium: 196mg | Fiber: 1g | Sugar: 42g | Calcium: 57mg | Iron: 2.2mg

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18 thoughts on “Easy Irish Cocktail Cupcakes”

  1. These were just what the doctor ordered. I have made these thenlong tedious way, and this way. I prefer this way. The flavors are excellent, and the texture is lovely. My husband tried one as soon as they were done. He said he really couldn’t tell much difference between these user friendly cupcakes, and the ones I spent half a day on…lol

      1. Hi Mary! It is. I am very sensitive to alcohol and have no problem with the cupcakes. If the frosting is made with alcohol that would be a different issue. Thanks for stopping by!

  2. So easy and well loved. This is the third time I’ve made them for friends and coworkers and they all love them!

  3. Looks wonderful and easy!!!
    A cake mix usually makes 24 cupcakes. Your recipe calls for 12 cupcakes. Do you make them larger than normal!

    1. Hi Ellen! It’s a mistake! It should be 24 cupcakes. I link to this recipe from an Irish Chocoflan that leaves half the cake batter available for cupcakes so I accidentally put 12. We’ll fix it. You should get 24 cupcakes if you follow this recipe. Enjoy!

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