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Ingredients

• For the cupcakes:
• 1 cup stout (such as Guinness)
• 1 cup (2 sticks) unsalted butter
• 3/4 cup unsweetened cocoa powder
• 2 cups flour
• 2 cups sugar
• 1 1/2 teaspoons baking soda
• 3/4 teaspoon salt
• 2 large eggs
• 2/3 cup sour cream (full fat is best)
• For the filling:
• 8 ounces bittersweet chocolate
• 1/3 cup heavy cream
• 1/3 cup Bailey's Irish Cream (the original recipe calls for 2/3 heavy cream and no Bailey's in the filling, but I found it increased the awesome quotient just a little bit)
• 2 tablespoons butter, room temperature
• 1 to 2 teaspoons Irish whiskey
• For the frosting
• Note: If you want lots of frosting on each cake, go ahead and double this recipe
• 3 to 4 cups confections' sugar
• 1 stick (1/2 cup) unsalted butter, at room temperature
• 3 to 4 tablespoons Bailey's Irish Cream (or more, to taste)

Description

Serious Eats