There’s a specific kind of cupcake that makes a room full of adults act like kids at a birthday party. These Baileys coffee cupcakes are that cupcake — tender, espresso-laced cake soaked with Irish cream, topped with a swirl of Baileys buttercream so silky and boozy-sweet it should probably come with a warning label. They taste like your favorite coffee drink got turned into dessert by someone who really, truly understood the assignment.
I brought a batch of these to a friend’s dinner party once and a grown man asked if he could take three home in a Tupperware. That tells you everything you need to know.
Two Components, One Showstopper — Here’s the Lineup
This recipe has a cupcake and a frosting. Both use Baileys and coffee, which means the flavor is layered and consistent from cake to cream.
The Cupcakes
| Ingredient | Amount | What It Does |
|---|---|---|
| Cake flour, spooned & leveled | 1¾ cups (207g) | Ultra-fine texture for an impossibly tender crumb |
| Espresso powder | 2 tsp | Deepens the chocolate-adjacent richness |
| Baking powder | ¾ tsp | Gentle lift |
| Baking soda | ¼ tsp | Reacts with sour cream for extra tenderness |
| Salt | ¼ tsp | Balances sweetness, sharpens coffee flavor |
| Unsalted butter, softened | ½ cup (113g) | Rich, golden, creamy base |
| Granulated sugar | 1 cup (200g) | Sweetness and moisture |
| Egg whites, room temp | 3 large | Light, airy structure without the heaviness of whole eggs |
| Vanilla extract | 1½ tsp | Warm, fragrant depth |
| Sour cream or yogurt, room temp | ⅓ cup (80g) | Tangy moisture that keeps cake soft for days |
| Strong black coffee, cooled | ¼ cup (60ml) | Real coffee flavor, not just espresso powder |
| Baileys Irish Cream | ⅓ cup (80ml) | The star — boozy, creamy, unmistakable |
The Baileys Coffee Buttercream
| Ingredient | Amount | What It Does |
|---|---|---|
| Unsalted butter, softened | 1 cup (226g) | Whipped into a cloud-like base |
| Confectioners’ sugar | 4 cups (480g) | Sweet, smooth body |
| Espresso powder (optional) | ½ tsp | Extra coffee punch in the frosting |
| Baileys Irish Cream | 3 tbsp (45ml) | Boozy, creamy sweetness |
| Strong black coffee, cooled | 1½ tbsp | Deepens the coffee flavor without thinning too much |
| Salt | Pinch | Cuts the sweetness to perfection |
| Chocolate sprinkles | For garnish | Because they deserve it |
The Fumbles That Flatten Your Cupcakes
I’m putting these before the steps because baking is chemistry, and knowing what not to do is half the battle.
1. Cold ingredients. Butter, egg whites, sour cream — all must be at room temperature. Cold ingredients don’t emulsify properly. You’ll get a lumpy batter that produces dense, uneven cupcakes.
2. Overfilling the liners. Two-thirds full. Not a drop more. These rise significantly and will mushroom over the edges if overfilled, then collapse as they cool.
3. Overmixing after adding liquids. Once the coffee and Baileys go in, mix on low speed just until combined. Overmixing develops gluten and turns your tender cake into something tough and rubbery.
4. Frosting warm cupcakes. The buttercream will melt into a sad puddle. Cool them completely — at least 45 minutes. Patience here is non-negotiable.
From Mixing Bowl to Perfect Swirl
Prep: 20 minutes | Bake: 19–22 minutes | Cool + Frost: 30 minutes | Total: About 1 hour 15 minutes | Makes: 14 cupcakes
Preheat and Line
Set your oven to 350°F. Line a 12-cup muffin tin plus 2 extra cups in a second tin — this recipe makes about 14.
Whisk the Dry Ingredients
Combine the cake flour, espresso powder, baking powder, baking soda, and salt in a bowl. Whisk until evenly blended. Set aside.
Cream the Butter and Sugar
Beat the softened butter on high speed until smooth and creamy — about 1 minute. Add the sugar and beat on high for 2 full minutes until the mixture is pale, fluffy, and visibly lighter. Scrape down the sides and bottom of the bowl.
Add the egg whites and vanilla. Beat on medium-high until combined. Mix in the sour cream. Scrape again — batter loves to hide in the corners.
Bring the Dry and Wet Together
With the mixer on low, add the dry ingredients and mix until just incorporated. Still on low, slowly pour in the cooled coffee, then the Baileys. Beat just until combined. Check the bottom of the bowl with a spatula and whisk out any lurking lumps by hand.
The batter should look silky, slightly liquid, and smell like a coffee shop that also happens to serve cocktails.
Fill and Bake
Spoon or pour the batter into liners — two-thirds full, no more. Bake for 19–22 minutes until a toothpick in the center comes out clean. The tops should be set and springy, the edges barely pulling away from the liners.
Cool completely in the pan for 10 minutes, then transfer to a wire rack. Do not frost until completely cool.
Whip the Baileys Buttercream
Beat the softened butter on medium speed for 2 minutes until creamy and pale. Add the confectioners’ sugar, espresso powder (if using), Baileys, coffee, and salt. Start on low for 30 seconds — unless you want a powdered sugar snowstorm — then increase to medium-high and beat for 2 full minutes. The frosting should be light, fluffy, and glossy.
Too thin? Add up to ½ cup more confectioners’ sugar. Too thick? Another tablespoon of Baileys. Too sweet? A pinch more salt.
Frost and Finish
Pipe or spread the buttercream onto the cooled cupcakes. A large round tip gives you that gorgeous, bakery-style swirl. Scatter chocolate sprinkles on top while the frosting is still soft.
Stand back. These look stunning.
What Each Cupcake Carries
Per cupcake (1 of 14):
| Nutrient | Amount |
|---|---|
| Calories | ~350 |
| Fat | ~16 g |
| Saturated Fat | ~10 g |
| Carbohydrates | ~48 g |
| Sugar | ~38 g |
| Protein | ~3 g |
| Sodium | ~130 mg |
The honest take: These are a celebration dessert — rich, indulgent, worth every calorie. The espresso and Baileys deliver so much flavor that one cupcake is genuinely enough.
The Cupcake That Turns Every Gathering Into an Event
This is the recipe that makes you that person at the party — the one who walks in with cupcakes so beautiful and ridiculously good that people remember them months later. Serve them after dinner with espresso. Bring them to a holiday exchange and outshine every cookie on the table. Package them as a gift for someone who deserves something extraordinary.
Make them this weekend. Then come back and leave a comment telling me about the first bite — that moment when the Baileys hits. Rate the recipe so other bakers can find it, and subscribe so you never miss another one.
Fourteen cupcakes. One very happy table. Go.
Print
Baileys & Coffee Cupcakes
Tender espresso-laced cupcakes infused with Baileys Irish Cream, topped with a silky Baileys coffee buttercream. The ultimate adult cupcake for parties, holidays, and celebrations. Makes 14 cupcakes with a moist, flavorful crumb and a boozy, creamy frosting swirl.
- Total Time1 hour 15 minutes
- Yield14 cupcakes 1x
Ingredients
Cupcakes
- 1 3/4 cups cake flour (207g), spooned and leveled
- 2 teaspoons espresso powder
- 3/4 teaspoon baking powder
- 1/4 teaspoon baking soda
- 1/4 teaspoon salt
- 1/2 cup unsalted butter (113g), softened to room temperature
- 1 cup granulated sugar (200g)
- 3 large egg whites, at room temperature
- 1 1/2 teaspoons pure vanilla extract
- 1/3 cup sour cream or plain yogurt (80g), at room temperature
- 1/4 cup strong black coffee (60ml), cooled to room temperature
- 1/3 cup Baileys Irish Cream (80ml)
Baileys Coffee Buttercream
- 1 cup unsalted butter (226g), softened to room temperature
- 4 cups confectioners’ sugar (480g)
- 1/2 teaspoon espresso powder
- 3 tablespoons Baileys Irish Cream (45ml)
- 1 1/2 tablespoons strong black coffee, cooled to room temperature
- 1 pinch salt
- chocolate sprinkles, for garnish (optional)
Instructions
Cupcakes
- Preheat and Line: Preheat oven to 350°F (177°C). Line a 12-count muffin pan with cupcake liners plus 2 additional liners in a second pan (makes about 14 cupcakes).
- Whisk Dry Ingredients: Combine cake flour, espresso powder, baking powder, baking soda, and salt in a bowl. Whisk to blend and set aside.
- Cream Butter and Sugar: Beat softened butter on high speed until smooth, about 1 minute. Add sugar and beat on high for 2 minutes until pale and fluffy. Add egg whites and vanilla, beat on medium-high until combined. Beat in sour cream. Scrape down sides as needed.
- Combine and Add Liquids: With mixer on low, add dry ingredients until just incorporated. Slowly pour in cooled coffee then Baileys, mixing on low just until combined. Do not overmix. Whisk by hand to remove any lumps at the bottom of the bowl.
- Bake: Fill liners two-thirds full. Bake 19-22 minutes until a toothpick inserted in the center comes out clean. Cool completely before frosting.
Buttercream
- Make the Buttercream: Beat softened butter on medium speed for 2 minutes until creamy. Add confectioners’ sugar, espresso powder (if using), Baileys, coffee, and salt. Beat on low 30 seconds, then increase to medium-high for 2 full minutes until light and fluffy. Adjust with more sugar if too thin or more Baileys if too thick.
- Frost and Garnish: Pipe or spread buttercream onto completely cooled cupcakes. Top with chocolate sprinkles if desired. Store leftovers covered in the refrigerator for up to 5 days.
Notes
All dairy ingredients (butter, egg whites, sour cream) must be at room temperature for proper emulsification. Cake flour creates the most tender crumb — if substituting all-purpose, use 1½ cups plus 3 tablespoons and add 3 tablespoons cornstarch. Espresso powder enhances coffee flavor without adding liquid; instant coffee granules can substitute. Cool the brewed coffee completely before adding to the batter. Fill liners only two-thirds full to prevent overflow. Do not frost until cupcakes are completely cool. Buttercream can be adjusted: add more confectioners’ sugar if too thin, more Baileys if too thick, or a pinch of salt if too sweet. Store frosted cupcakes in the refrigerator for up to 5 days; bring to room temperature before serving.
- Prep Time: 20 minutes
- Cook Time: 22 minutes
- Category: Cupcake, Dessert
- Cuisine: American, Irish-Inspired
Nutrition
- Calories: 350
- Sugar: 38
- Sodium: 130
- Fat: 16
- Saturated Fat: 10
- Carbohydrates: 48
- Fiber: 0.5
- Protein: 3
- Cholesterol: 40
