The Ultimate Baileys & Guinness Irish Cupcakes

By Emily

On March 29, 2026

Close-up of a vibrant, crisp chocolate cupcake topped with off-white Baileys buttercream and tiny green and white nonpareils resting on a green and white checkered cloth.

Cuisine

American, Irish

Prep time

20 minutes

Cooking time

18 minutes

Total time

38 minutes

Servings

12 cupcakes

There is nothing quite like a freshly baked batch of Irish Cupcakes to celebrate a special occasion or simply indulge your sweet tooth. These decadent treats perfectly balance a rich, deep chocolate base with the luscious, creamy notes of classic Irish liqueurs. Every single bite is designed to offer a harmonious blend of tender cake and melt-in-your-mouth frosting.

If you love professional bakery-style desserts, these Irish Cupcakes will exceed your expectations. Picture a delicious chocolate cupcake nestled in a pleated white paper liner, crowned with a generous, tall swirl of creamy off-white buttercream frosting. To finish the masterpiece, the frosting is lightly sprinkled with tiny green and pearly white nonpareils for that perfect vibrant, crisp, and appetizing look.

Professional food photography showing a beautifully frosted Irish Cupcake with a shallow depth of field, creating a beautiful bokeh background with another blurred cupcake.
Using a large star piping tip is the key to creating this generous, tall swirl of frosting.

Why These Irish Cupcakes Will Steal the Show

  • Unmatched Visual Appeal: The tall swirl of creamy off-white buttercream frosting creates a stunning, professional silhouette that mimics high-end bakeries.
  • Perfect Textural Contrast: The incredibly moist, tender crumb of the chocolate cake pairs beautifully with the rich and velvety smooth frosting.
  • Authentic Flavor Profile: Using real stout beer in the batter and Irish cream in the frosting gives these cupcakes a deeply complex, authentic taste.
  • Picture-Perfect Details: The delicate dusting of tiny green and pearly white nonpareils provides a gorgeous, festive pop of color against the off-white frosting.

The Secret Components for a Moist Crumb and Tall Swirl

All-Purpose Flour & Cocoa Powder: You will need 1 cup (120g) of all-purpose flour and 1/2 cup (50g) of high-quality Dutch-processed cocoa powder. The cocoa powder is essential for achieving that dark, delicious chocolate cupcake appearance.

Granulated Sugar & Brown Sugar: A blend of 3/4 cup (150g) granulated sugar and 1/4 cup (50g) packed light brown sugar retains maximum moisture. This combination ensures a tender, melt-in-your-mouth texture.

Irish Stout Beer (Guinness): Using 1/2 cup (120ml) of room-temperature stout beer enhances the chocolate flavor without making the cake taste bitter. The carbonation also helps create a wonderfully light crumb.

Unsalted Butter & Eggs: You will need 1/2 cup (113g) of melted unsalted butter and 2 large room-temperature eggs. These foundational ingredients provide structure and richness to the batter.

Baking Soda, Baking Powder & Salt: Use 1/2 tsp (3g) baking soda, 1/2 tsp (2g) baking powder, and 1/4 tsp (1.5g) salt. These leavening agents ensure the cupcakes dome beautifully during baking.

Irish Cream Buttercream Foundation: For the frosting, gather 1 cup (226g) softened unsalted butter and 3 cups (360g) powdered sugar. This creates the stiff, stable base required for a generous, tall swirl.

Irish Cream Liqueur (Baileys) & Vanilla: Add 3 tbsp (45ml) of Irish cream liqueur and 1 tsp (5ml) of pure vanilla extract. This gives the frosting its signature creamy off-white color and irresistible flavor.

Tiny Green and Pearly White Nonpareils: You will need 2 tbsp (30g) of these specific sprinkles. They are the crucial finishing touch for visual crispness and a delightful crunch.

Essential Baking Tools for That Bakery-Style Look

To replicate the exact aesthetic of these cupcakes, you must use a standard 12-cup muffin tin lined with classic pleated white paper liners. The crisp white liners contrast beautifully against the dark chocolate cake.

You will also need a large piping bag fitted with a large open star tip (such as a 1M tip). This specific tool is non-negotiable if you want to achieve that generous, tall swirl of creamy off-white buttercream frosting.

Close-up of a vibrant, crisp chocolate cupcake topped with off-white Baileys buttercream and tiny green and white nonpareils resting on a green and white checkered cloth.
The beautiful off-white buttercream perfectly complements the dark, rich chocolate crumb.

Crafting the Perfect Stout Cake and Creamy Frosting

Brewing the Chocolate Stout Batter

Preheat your oven to 350°F (175°C) and line your muffin tin with the pleated white paper liners. In a large mixing bowl, whisk together the melted unsalted butter, granulated sugar, and brown sugar until completely smooth. Beat in the room-temperature eggs one at a time, followed by the Irish stout beer, mixing gently until just combined.

In a separate bowl, sift together the all-purpose flour, Dutch-processed cocoa powder, baking soda, baking powder, and salt. Gradually fold these dry ingredients into your wet stout mixture using a rubber spatula. Stop mixing the moment you no longer see dry flour streaks to ensure a tender crumb.

Baking to a Perfect Dome

Divide the dark chocolate batter evenly among the pleated white paper liners, filling each about two-thirds of the way full. Place the tin in the center of your preheated oven and bake for 16 to 18 minutes. You will know they are done when the tops spring back to a gentle touch and a toothpick inserted into the center comes out clean.

Remove the cupcakes from the oven and allow them to rest in the hot tin for exactly 5 minutes. Carefully transfer the cupcakes to a wire cooling rack and let them cool completely to room temperature. If you frost them while even slightly warm, your tall swirl of buttercream will melt and collapse.

Whipping the Off-White Irish Cream Buttercream

In the bowl of a stand mixer fitted with a paddle attachment, beat the softened unsalted butter on medium-high speed for 5 minutes until pale and creamy. Reduce the speed to low and gradually add the powdered sugar, one cup at a time. Once the sugar is incorporated, pour in the Irish cream liqueur and vanilla extract.

Increase the mixer speed back to medium-high and whip the frosting for another 3 to 4 minutes. The frosting should transform into a light, airy, creamy off-white buttercream that holds stiff peaks. If the frosting appears too soft, add an additional 1/4 cup (30g) of powdered sugar until the desired piping consistency is reached.

Piping the Tall Swirl and Decorating

Transfer the off-white buttercream to your piping bag fitted with the large open star tip. Hold the bag directly above the center of a cooled chocolate cupcake. Apply steady pressure and pipe a tight spiral, moving outward to the edge of the cupcake, then spiraling upwards to form a generous, tall swirl.

Immediately after piping the frosting, lightly sprinkle the top with the tiny green and pearly white nonpareils. It is critical to apply the sprinkles before the buttercream forms a crust so they adhere perfectly. Place the finished cupcakes on a green and white checkered cloth for a stunning, appetizing presentation.

Pro Advice for Flawless Irish Cupcakes

  • Room Temperature Matters: Ensure your eggs, stout beer, and butter are all at room temperature before you begin. Cold ingredients will cause the batter to break and result in a dense cake.
  • Do Not Overfill: Only fill your pleated white paper liners two-thirds full. Overfilling will cause the batter to spill over the edges, ruining the perfectly domed top.
  • Sift Your Cocoa: Always sift your cocoa powder and powdered sugar. Lumps in your dry ingredients will create unappetizing pockets of dry powder in the cake and clog your piping tip.
  • Chill the Frosting: If your kitchen is warm, place the filled piping bag in the refrigerator for 5-10 minutes before decorating to ensure the tall swirl holds its majestic shape.

Keeping Your Chocolate Treats Fresh

Because the buttercream contains dairy, these Irish Cupcakes should be stored in an airtight container in the refrigerator. They will maintain their supreme moisture and flavor for up to 4 days. Allow them to sit at room temperature for 30 minutes before serving to soften the buttercream.

If you want to freeze the cupcakes, it is best to do so before adding the frosting. Wrap the unfrosted baked chocolate cupcakes tightly in plastic wrap and store them in a freezer-safe bag for up to 3 months. Thaw them overnight at room temperature before whipping up a fresh batch of frosting.

Pairing Your Stout and Cream Desserts

While these cupcakes are a stunning centerpiece on their own, they pair wonderfully with a robust cup of coffee or an after-dinner espresso. If you are hosting a larger gathering or holiday party, consider building out a full dessert table to impress your guests.

For a beautiful spread, serve these alongside elegant strawberry trifle cups for a fruity contrast. You can also incorporate bite-sized cannoli cheesecake bars or chewy valentine’s day sugar cookie bars for variety. If you have guests who prefer traditional sliceable desserts, explore our favorite cheesecake recipes to round out the menu.

Common Questions About Baking Irish Cupcakes

It is highly recommended to freeze the cupcakes unfrosted. The creamy off-white buttercream can change texture when frozen and thawed. Wrap the bare baked cupcakes in plastic wrap and freeze for up to 3 months, then frost them fresh.

Yes. To make them alcohol-free, substitute the stout beer with strong brewed coffee or buttermilk in the cake batter. For the frosting, replace the Irish cream liqueur with heavy whipping cream and a dash of espresso powder.

While you can use any standard cupcake liner, the pleated white paper liners create a beautiful, professional contrast against the dark chocolate cake and off-white buttercream, giving them a classic bakery look.

You can find specialized nonpareil blends in the baking aisle of most craft stores, cake decorating supply shops, or via online retailers. They are essential for achieving that vibrant, festive crunch on top of the cupcakes.

A collapsing swirl usually happens if the buttercream is too warm or if the cupcakes were not fully cooled before frosting. Always ensure your chocolate cupcakes are at room temperature and chill your piping bag briefly if the frosting feels too soft.

The Complete Irish Cupcakes Master Recipe

Close-up of a vibrant, crisp chocolate cupcake topped with off-white Baileys buttercream and tiny green and white nonpareils resting on a green and white checkered cloth.

The Ultimate Baileys & Guinness Irish Cupcakes

These decadent Irish Cupcakes feature a rich chocolate stout base baked in pleated white paper liners, topped with a generous, tall swirl of Baileys creamy off-white buttercream frosting and tiny green and pearly white nonpareils.
Prep Time 20 minutes
Cook Time 18 minutes
Total Time 38 minutes
Servings: 12 cupcakes
Course: Dessert, Snack
Cuisine: American, Irish
Calories: 485

Ingredients
  

Cupcake Ingredients
  • 1 cup all-purpose flour 120g
  • 1/2 cup Dutch-processed cocoa powder 50g, sifted
  • 3/4 cup granulated sugar 150g
  • 1/4 cup light brown sugar 50g, packed
  • 1/2 cup Irish stout beer (Guinness) 120ml, room temperature
  • 1/2 cup unsalted butter 113g, melted
  • 2 large eggs room temperature
  • 1/2 tsp baking soda 3g
  • 1/2 tsp baking powder 2g
  • 1/4 tsp salt 1.5g
  • 1 cup unsalted butter 226g, softened
  • 3 cups powdered sugar 360g, sifted
  • 3 tbsp Irish cream liqueur (Baileys) 45ml
  • 1 tsp vanilla extract 5ml
  • 2 tbsp tiny green and pearly white nonpareils 30g, for garnish

Equipment

  • 1 12-cup muffin tin Essential for baking the cupcakes.
  • 12 Pleated White Paper Liners Provides the classic bakery aesthetic.
  • 1 Piping Bag with 1M Star Tip Required to create the tall swirl of frosting.

Instructions
 

Baking and Decorating the Cupcakes
  1. Preheat your oven to 350°F (175°C). Line a standard 12-cup muffin tin with pleated white paper liners.
  2. In a large bowl, whisk together the melted unsalted butter, granulated sugar, and brown sugar until smooth. Whisk in the eggs one at a time, followed by the Irish stout beer.
  3. Sift the all-purpose flour, cocoa powder, baking soda, baking powder, and salt. Gently fold the dry ingredients into the wet mixture until no dry streaks remain.
  4. Divide the batter evenly into the paper liners, filling each 2/3 full. Bake for 16-18 minutes until a toothpick inserted into the center comes out clean. Cool completely on a wire rack.
  5. In a stand mixer, beat the softened unsalted butter on medium-high speed for 5 minutes until pale and creamy.
  6. Gradually add the powdered sugar, mixing on low speed. Once incorporated, pour in the Irish cream liqueur and vanilla extract. Whip on medium-high for 3-4 minutes until it forms a creamy off-white buttercream.
  7. Transfer the frosting to a piping bag with a large star tip. Pipe a generous, tall swirl on each cooled cupcake. Immediately sprinkle with the tiny green and pearly white nonpareils.

Notes

Ensure all cold ingredients are at room temperature before starting to prevent the batter from splitting.
If the frosting is too warm to hold a tall swirl, chill the piping bag in the fridge for 5-10 minutes before decorating.

A delicious chocolate Irish Cupcake in a pleated white paper liner, topped with a generous, tall swirl of creamy off-white buttercream frosting sprinkled with tiny green and pearly white nonpareils.
Save these stunning Irish Cupcakes to your favorite dessert Pinterest board!

Share Your Baking Triumph

We hope you thoroughly enjoyed baking—and eating—these spectacular chocolate stout treats. That generous, tall swirl of creamy off-white buttercream frosting is truly a showstopper that deserves to be celebrated.

If your cupcakes turned out beautifully, please leave a star rating and a comment below to let us know how they went! Don’t forget to pin this recipe to your favorite dessert boards by visiting Pinterest so you can easily find it for your next celebration.

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