Happy Saint Patrick's Day


Irish Car Bomb Cupcake

17 Mar 2022, Posted by Chris Waltman in Chris' Corner

Irish Car Bomb Cupcake

Guinness Chocolate Cupcakes with Jameson Ganache filling and Bailey’s Icing


For the Cupcakes

  • ½ cup Guinness (or other stout)
  • ½ cup butter (melted)
  • 3/8 cup (aka 1/4 and 1/8 cups) cocoa powder
  • 1 cup flour
  • 1 cup sugar
  • ¾ teaspoon baking soda
  • ½ teaspoon salt
  • 1 egg
  • 3/8 cup (aka ¼ and 1/8 cups) cup sour cream

For the Ganache

  • 3 ½ oz. bittersweet chocolate
  • 1/3 cup heavy cream
  • 1 tablespoon butter
  • 1 teaspoon Jameson whiskey (or other whiskey)
  • ½ teaspoon vanilla extract

For the Frosting

  • 1 ½ cup powdered sugar
  • ½ cup butter (room temperature)
  • 2 tablespoons Bailey’s (or other Irish cream liquor)


  1. Preheat oven to 325F degrees Convection (350F degrees Conventional)
  2. Melt the butter (on the stovetop or in the microwave)
  3. Add Guinness and cocoa powder and stir to combine well
  4. In a large bowl, mix the flour, sugar, salt, and baking soda
  5. Stir in egg and sour cream
  6. Add chocolate mixture and stir well
  7. Place cupcake papers in the muffin tin
  8. Spoon the mixture into the tin to fill about ¾ full (you’ll have enough for 12 cupcakes)
  9. Bake for 15 minutes Convection (17 Conventional)
  10. Remove from oven and allow to cool fully


  1. Gently heat cream on the stovetop or in the microwave
  2. Add chocolate and let sit for a few moments
  3. Stir gently until chocolate is melted and combined with the cream
  4. Mix in butter, vanilla, and Jameson
  5. Allow to cool until thick (semi-solid)
  6. Spoon into a pastry bag or plastic bag


  1. Pour all ingredients into a bowl
  2. Using a spatula (or your commercial Kitchen Aid Mixer) mix until very well combined
  3. Spoon into a pastry bag or plastic bag and chill until ready to use


  1. After the cupcakes have cooled, use a small spoon or melon baller to scoop out the centers
  2. Pipe in ganache to fill (but try not to have them overflowing)
  3. Pipe icing onto the top – it’s very sweet so you will probably not want a ton on each one
  4. Snarf down one or two, but try to share and avoid a cupcake hangover!