Supremely moist Irish coffee cupcakes topped with boozy buttercream! This one is for adults only!

Irish Coffee Cupcakes




Irish coffee CUPCAKES! Moist brown sugar cupcakes topped with boozy buttercream. Perfect for parties or St. Paddy's Day!



  1. For the cupcakes:
  2. Preheat oven to 350 degrees (F). Line a 12-mold cupcake tin with paper liners and lightly spray the liners with non-stick spray, set aside. In a large bowl combine the flour, baking powder, baking soda, salt, and cinnamon, set aside. In a small bowl combine the milk and sour cream, mix well to combine and set aside. In a large bowl using a handheld electric mixer (or a stand mixer fitted with the paddle attachment) beat the butter and both sugars until light and fluffy, about 3-4 minutes (don't skimp on time here!). Beat in the vanilla extract, then add in the eggs and egg yolk, one at a time, beating well after each addition. Reduce mixer speed to low and gradually add in flour mixture in 2 additions, alternating with sour cream/milk mixture, beginning and ending with flour. Finally stir in the hot coffee, beating until combined.
  3. Fill the prepared cupcake tins 3/4 of the way full. Bake in preheated oven for 20 minutes, or until a toothpick inserted into the center of a cupcake comes out clean. Allow cupcakes to cool in the pan for 10 minutes before transferring them to a cooling rack to cool completely.
  4. For the frosting:
  5. Using an electric mixer fitted with the paddle attachment, or an electric handheld mixer, beat the butter in a large bowl until smooth. Reduce the mixer speed to low and gradually beat in the confectioners' sugar, one cup at a time, until it has all been added. The mixture will look thick and clumpy - don't fret! Add in the vanilla extract, Irish whiskey, cold coffee, and salt and
  6. beat on low until incorporated, then increase the speed to medium-high and beat the frosting until light and fluffy. If the frosting appears to thick, add in an extra tablespoon or two of coffee; if the frosting appears too thin, add in an extra 1/4 cup or so of confectioners' sugar. Frost cupcakes as desired, and lightly sprinkle with cinnamon (optional). Cupcakes are best served the day they are made, but will keep, stored in the fridge and covered, for up to 2 days. Bring to room temperature before serving.


*Cupcakes may be frozen, unfrosted, for up to 2 months. *Cupcakes must cool completely before being frosted.

Courses Dessert

Cuisine Irish

Nutrition Facts

Serving Size 1 cupcake

Amount Per Serving

% Daily Value

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

Recipe by Baker by Nature at