Dip in melted semisweet chocolate.
Car Bomb Cupcake (doubled)
(makes 5 ½ dozen if you use a ¼ cup measure to fill the cupcake cups)
For the Guinness Chocolate Cupcakes
2 cup stout (such as Guinness)
2 cup (4 sticks) unsalted butter
1 1/2 cup unsweetened cocoa powder (preferably Dutch-process)
4 cups all purpose flour
4 cups sugar
3 teaspoons baking soda
1 1/2 teaspoon salt
4 large eggs
1 1/3 cup sour cream
Ganache Filling : use a double boiler, it never works without it
16 ounces bittersweet chocolate
1 1/3 cup heavy cream
4 tablespoons butter, room temperature
2 to 4 teaspoons Irish whiskey (optional)
Baileys Frosting (doubled +1)
9-12 cups confections sugar (1 bag)
3 sticks unsalted butter, at room temperature
9-12 tablespoons Baileys (or milk, or heavy cream, or a combination thereof)
Special equipment: 1-inch round cookie cutter or an apple corer and a piping bag (though a plastic bag with the corner snipped off will also work)
Make the cupcakes: Preheat oven to 350°F. Line 24 cupcake cups with liners. Bring 2 cup stout and 2 cup butter to simmer in heavy large saucepan over medium heat. Add cocoa powder and whisk until mixture is smooth. Cool slightly.
Whisk flour, sugar, baking soda, and 3/4 teaspoon salt in large bowl to blend.
Using electric mixer, beat eggs and sour cream in another large bowl to blend. Add stout-chocolate mixture to egg mixture and beat just to combine.
Add flour mixture and beat briefly on slow speed. Using rubber spatula, fold batter until completely combined.
Divide batter among cupcake liners, filling them 2/3 to 3/4 of the way. Bake cake until tester inserted into center comes out clean, 17 minutes. Cool cupcakes on a rack completely.
Make the filling: Chop the chocolate and transfer it to a heatproof bowl. Heat the cream until simmering and pour it over the chocolate. Let it sit for one minute and then stir until smooth. (If this has not sufficiently melted the chocolate, you can return it to a double-boiler to gently melt what remains. 20 seconds in the microwave, watching carefully, will also work.) Add the butter and whiskey (if you’re using it) and stir until combined.
Fill the cupcakes: Let the ganache cool until thick but still soft enough to be piped (the fridge will speed this along but you must stir it every 10 minutes). cut the holes and fill.
Make the frosting: Whip the butter in the bowl of an electric mixer, or with a hand mixer, for several minutes. You want to get it very light and fluffy. Slowly add the powdered sugar, a few tablespoons at a time. When the frosting looks thick enough to spread, drizzle in the Baileys (or milk) and whip it until combined. Ice and decorate the cupcakes.
Do ahead: You can bake the cupcakes a week or two in advance and store them, well wrapped, in the freezer. You can also fill them before you freeze them. They also keep filled — or filled and frosted — in the fridge for a day. (Longer, they will start to get stale.)
