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Best Guinness Chocolate Cupcakes Recipe with Easy Baileys Mascarpone Buttercream

Guinness chocolate cupcakes - featured image
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Rich and moist Guinness chocolate cupcakes topped with a silky, boozy Baileys mascarpone buttercream. Perfect for celebrations or a cozy indulgence.

Ingredients

Scale
  • 1 ¾ cups (220 g) all-purpose flour, sifted
  • ¾ cup (75 g) unsweetened cocoa powder, preferably Dutch-processed
  • 1 ½ teaspoons baking soda
  • ½ teaspoon salt
  • 1 ½ cups (300 g) granulated sugar
  • ⅓ cup (75 g) unsalted butter, melted
  • 2 large eggs, room temperature
  • 1 cup (240 ml) Guinness stout, room temperature
  • ½ cup (120 ml) buttermilk, room temperature
  • 1 teaspoon vanilla extract
  • ½ cup (115 g) unsalted butter, softened (for buttercream)
  • 1 cup (240 g) mascarpone cheese, chilled
  • 2 to 2 ½ cups (240–300 g) powdered sugar, sifted
  • 3 tablespoons (45 ml) Baileys Irish Cream
  • ½ teaspoon vanilla extract (for buttercream)

Instructions

  1. Preheat your oven to 350°F (175°C) and line a 12-cup muffin tin with cupcake liners.
  2. In a large bowl, sift together the flour, cocoa powder, baking soda, and salt. Whisk until well combined.
  3. In a separate bowl, whisk granulated sugar with melted butter until smooth and slightly glossy. Beat in eggs one at a time, then stir in vanilla extract.
  4. Slowly pour in Guinness and buttermilk into the wet mixture, mixing gently.
  5. Gradually fold the dry ingredients into the wet using a rubber spatula. Mix just until combined.
  6. Spoon the batter evenly into the 12 liners, filling about ⅔ full.
  7. Bake for 18-22 minutes, checking with a toothpick for doneness.
  8. Remove cupcakes from the pan after 5 minutes, then transfer to a cooling rack to cool completely.
  9. For the buttercream, beat softened butter on medium speed until creamy. Gradually add powdered sugar, beating well after each addition.
  10. Mix in mascarpone cheese, Baileys Irish Cream, and vanilla extract. Beat until fluffy and smooth. Chill if too soft.
  11. Frost the cooled cupcakes using a piping bag or knife. Optionally, garnish with chocolate shavings or cocoa powder.

Notes

Bring Guinness and other wet ingredients to room temperature before mixing to avoid curdling. Use Dutch-processed cocoa powder for best flavor. Fold dry ingredients gently to keep cupcakes light. Chill buttercream if too soft before frosting. Cupcakes freeze well unfrosted for up to 2 months.

Nutrition

Keywords: Guinness chocolate cupcakes, Baileys mascarpone buttercream, Irish dessert, chocolate cupcakes, boozy frosting, St. Patrick's Day dessert

Find it online: https://tempotaste.com/best-guinness-chocolate-cupcakes-recipe-with-easy-baileys-mascarpone-buttercream/