Ingredients

• 1 cup Irish stout beer , such as Guinness®
• 1 cup butter
• 0.75 cups unsweetened cocoa powder
• 2 cups all-purpose flour
• 2 cups white sugar
• 1.5 teaspoons baking soda
• 0.75 teaspoons salt
• 2 large eggs
• 0.67 cups sour cream
• 0.67 cups heavy whipping cream
• 8 ounces bittersweet chocolate , chopped
• 2 tablespoons butter
• 1 teaspoon Irish whiskey , or more to taste
• 0.5 cups butter , softened
• 3 cups confectioners' sugar , or more as needed
• 3 tablespoons Irish cream liqueur , such as Baileys®

Instructions

1. 1 Preheat the oven to 350 degrees F (175 degrees C). Line 24 muffin cups with paper liners.
2. 2 Bring Irish stout beer and 1 cup butter to a boil in a saucepan and set aside until butter has melted, stirring occasionally. Mix in cocoa powder until smooth.
3. 3 Whisk together flour, sugar, baking soda, and salt in a bowl until thoroughly combined.
4. 4 Beat eggs with sour cream in a large bowl with an electric mixer on low until well combined. Slowly beat in beer mixture, then flour mixture; beat until batter is smooth.
5. 5 Divide batter between the prepared cupcake cups, filling each cup about 2/3 full.
6. 6 Bake in the preheated oven until a toothpick inserted into the center of a cupcake comes out clean, about 17 minutes.
7. 7 Cool the cupcakes completely. Cut cores out of the center of each cupcake with a sharp paring knife. Discard cores.
8. 8 Bring cream to a simmer in a saucepan over low heat; stir in bittersweet chocolate until melted.
9. 9 Mix in 2 tablespoons butter and Irish whiskey until butter is melted; let mixture cool to room temperature. Filling will thicken as it cools.
10. 10 Spoon the filling into the cored cupcakes.
11. 11 For frosting: Whip 1/2 cup butter in a bowl with an electric mixer until fluffy, 2 to 3 minutes.
12. 12 Set mixer to low speed and slowly beat in confectioners' sugar, one cup at a time, until frosting is smooth and spreadable. Beat in Irish cream liqueur; adjust the thickness of frosting with more confectioners' sugar if needed.
13. 13 Spread frosting on filled cupcakes.

Nutrition per serving