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Irresistible Irish Car Bomb Cupcakes Recipe with Easy Whiskey Frosting

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These Irish Car Bomb Cupcakes combine rich chocolate, creamy Bailey’s, and sharp Irish whiskey in a moist cupcake topped with silky whiskey frosting. Perfect for St. Patrick’s Day or any festive occasion.

Ingredients

Scale
  • 1 ½ cups (190g) all-purpose flour
  • ⅓ cup (35g) unsweetened cocoa powder
  • 1 tsp baking powder
  • ½ tsp baking soda
  • ¼ tsp salt
  • 1 cup (200g) granulated sugar
  • ½ cup (115g) unsalted butter, softened
  • 2 large eggs, room temperature
  • ¾ cup (180ml) buttermilk
  • ¼ cup (60ml) Bailey’s Irish Cream
  • 1 tsp vanilla extract
  • ½ cup (115g) unsalted butter, softened (for frosting)
  • 2 cups (240g) powdered sugar, sifted
  • 2 tbsp (30ml) Irish whiskey
  • 1–2 tbsp (15-30ml) heavy cream
  • Pinch of salt

Instructions

  1. Preheat oven to 350°F (175°C). Line a 12-cup muffin tin with paper liners.
  2. In a large bowl, sift together flour, cocoa powder, baking powder, baking soda, and salt. Set aside.
  3. Using a mixer, beat ½ cup softened butter with granulated sugar until fluffy and pale, about 3-4 minutes.
  4. Beat in eggs one at a time, then stir in vanilla extract. Scrape down sides to mix well.
  5. In a separate bowl, whisk together buttermilk and Bailey’s Irish Cream.
  6. With mixer on low, add dry ingredients in three parts alternating with wet mixture, starting and ending with dry. Mix just until combined.
  7. Spoon batter evenly into liners about ⅔ full. Bake 18-22 minutes or until a toothpick comes out clean.
  8. Cool cupcakes in pan for 5 minutes, then transfer to a wire rack to cool completely.
  9. For frosting, beat ½ cup softened butter until smooth. Gradually add powdered sugar, mixing well.
  10. Stir in Irish whiskey and 1 tbsp heavy cream. Adjust consistency with more cream if needed. Add a pinch of salt.
  11. Once cupcakes are cool, frost generously. Optionally sprinkle cocoa powder or chocolate shavings on top.

Notes

Do not frost cupcakes while warm to prevent melting. If frosting is too runny, chill for 10 minutes; if too stiff, add cream one teaspoon at a time. Use room temperature eggs for better mixing. Sift dry ingredients to avoid lumps. For dairy-free or vegan versions, substitute ingredients as noted in the recipe.

Nutrition

Keywords: Irish Car Bomb cupcakes, whiskey frosting, St. Patrick's Day dessert, chocolate cupcakes, Bailey's cupcakes, boozy frosting

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