Guiness Cupcakes with Bailey's Frosting (Car Bomb Cupcakes)

UPDATE- So I updated this recipe a bit when I made a Guiness Cake this year for St. Patrick's Day. The cake recipe is a bit denser than this recipe, relying on baking powder more than baking soda to rise and with a little more chocolate. I also made the chocolate whiskey frosting.

Guiness cake is delicious. It can be made with any chocolate or dark stout beer, such as Duck Rabbit Milk Stout. There seem to be two main recipes for it online, Nigella Lawson's and the Great Barrington Brewery recipe. I have made both. These cupcakes I choose Nigella Lawson's, adapted it for cupcakes, and increased the darkness to it by adding a 1/4 cup of coffee in addition to the Guiness. However, while the recipe calls for a cream cheese frosting, I used the Bailey's Irish Cream Butter Cream recipe found on Smitten Kitchen. If you are asking, why did you not ALSO do the Chocolate Whiskey Ganache on Smitten Kitchen to truly make it a car bomb cupcake? The answer is two-fold. First, I didn't have a tiny baking round at my disposal, as this was made at my sister's house for my brother-in-law's birthday. Secondly, this cake is very rich and the Bailey's frosting is over the top and alcoholic as is. Last time I made the full-sized cake (using the Great Barrington recipe plus a little extra chocolate), I accused it (the cake) of getting me drunk. That might have been an unfair accusation given the wine consumed at that dinner party prior to the cake's arrival on the scene, but the point is the same. There's alcohol in the Bailey's and I think that's enough and that the whiskey ganache is unnecessary.

Unlike the Irish Cream, the Guiness alcohol does cook fully off, so if you want to serve this to kids, just do a basic cream cheese frosting instead. When I make this for St. Patrick's Day, I only top the top of the cake, making it look like a glass of Guiness with the foam on top. 

The superfine sugar is always nice to use in baking. If you don't have it, you can just use regular sugar, or if you are feeling fancy, run 2 cups of regular sugar through a food processor for a minute, creating a finer sugar. Remember that making frosting is not an exact science (unlike most else things in baking, so enjoy it). It will look wrong, then right, then wrong again. The trick is to add the powdered sugar in batches at a time to the creamed butter. This not only prevents a mess of powdered sugar everywhere, but also tends to require less sugar to hit your desired fluffy and delicious consistency.

Guiness Cupcakes with Bailey's Irish Cream Frosting (Car Bomb Cupcakes)

Guiness Cake:

Paper or Aluminum  muffin or cupcake wrappers
1 cup Guinness stout + 2 tablespoons
10 tablespoons (1 stick plus 2 tablespoons) unsalted butter
3/8 cup unsweetened dutch processed cocoa powder

1/4 cup cold coffee and/or 1 tsp espresso powder (both optional)
2 cups superfine sugar (I have used regular granulated sugar with no ill effects)
3/8 cup sour cream
2 extra-large eggs
1 tablespoon vanilla extract
2 cups all-purpose flour
2 1/2 teaspoons baking soda

Bailey's Frosting:

3 to 4 cups confections sugar
1 stick (1/2 cup or 4 ounces) unsalted butter, at room temperatue
3 to 4 tablespoons Baileys - 1 airplane bottle's worth

Additional milk or cream for blending if necessary

Instructions

For the Cupcakes

1. Heat oven to 350 degrees. 
2. Line muffin tins with foil or paper liners
3. In a large saucepan, combine Guinness and butter. Place over medium-low heat until butter JUST melts, then remove from heat into medium sized bowl. 
4. Add cocoa and superfine sugar, and whisk to blend.
5. Meanwhile, in a small bowl, combine sour cream, eggs and vanilla; mix well. 
6. Add sour cream and egg mixture to Guinness mixture.
7. Add coffee and espresso powder if using.
8. Add flour and baking soda, and whisk again until smooth. 
9. Pour into muffin tins, filling about 3/4 of the way, and bake until risen and a toothpick inserted in the center comes out clean, 17 to 20 minutes, rotating once for even baking. This may slightly deflate the cupcakes, so it might be good to have an official "tester" cupcake.
10. Leave in muffin tins for five minutes then remove to a wire rack to finish cooling. Do not frost until completely cool.

For the Frosting

1. 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.
2. When the frosting looks thick enough to spread or thicker, drizzle in the Baileys (or milk if you are doing the non-alcoholic option) and whip it until combined and frosting is correct texture. 
3. If this has made the frosting too thin (it shouldn’t, but just in case) beat in another spoonful or two of powdered sugar.
4. Frost the top of the cupcakes and serve. Store in a covered container in the fridge. They should keep for at least a day before starting to go stale.

Peanut Butter/ Nutella Chocolate Cupcakes

The second I saw the recipe for Peanut Butter Chocolate Cupcakes in Barefoot Contessa's book, I knew I would be making them, because I am an unabashed sucker for classic peanut butter/chocolate combinations. You don't see as many peanut butter chocolate cupcakes in the cupcake world as you'd initially think considering the dominance of the peanut butter chocolate combination in the rest of the sweet/dessert/candy market. The best reason I can give for this is that these cupcakes are RICH. Not cloyingly sweet, just very, very rich. This is one of the reasons why the lightness of the texture in the cupcakes (that you get by creaming the batter almost like you're making frosting or cookie dough at the beginning) is such a good match. The end result is essentially a Tagalong cupcake.

The Nutella version of the frosting is moister, due to the higher oil content of Nutella, or at least this is what I am assuming because just like Nutella cookies are flatter and rise less than peanut butter cookies, this frosting just doesn't cream quite as well as the peanut butter version. This leads to a different but still very pleasant experience because Nutella is basically instant goodness on everything it touches. The salt in the frosting leaves a nice, noticeable, welcome kick to the frosting. I used kosher salt, but if you'd prefer, you can use a finer grain. Unlike baking, frosting measurements really don't have to be super accurate, so feel free to experiment with amounts until it reaches a stiffness and sweetness of your liking. My only strong recommendation is that you make sure your ingredients are room-temperature before using them, especially the butter. Cold butter just doesn't cream as well, and both the cupcakes and the frosting really get their great consistency from creamed butter.

Barefoot Contessa writes all of her baking for a standing mixer, but given the size of my urban kitchen, I'm a hand mixer kind of gal, so I've adapted it. By the way, an investment in a good quality hand mixer with clear differences in speeds (a distinct low, medium low, medium, medium-high, and high) is a solid way to invest in kitchenware if you plan on baking. A good one will last decades. A cheap target one will fail you in delicate recipes (luckily, this is NOT that delicate of a recipe).

Peanut Butter/Nutella Chocolate Cupcakes

Ingredients

Cupcakes 12 tablespoons (1 1/2 sticks) unsalted butter, at room temperature 2/3 cup granulated sugar 2/3 cup light brown sugar, packed 2 extra-large eggs, at room temperature 2 teaspoons pure vanilla extract 1 cup buttermilk, shaken, at room temperature 1/2 cup sour cream, at room temperature 2 tablespoons brewed coffee 1/2 teaspoon espresso powder 1 3/4 cups all-purpose flour 1 cup cocoa powder 1 1/2 teaspoons baking soda 1/2 teaspoon kosher salt

Peanut Butter Icing 1 cup confectioners' sugar 1 cup creamy peanut butter 5 tablespoons unsalted butter, at room temperature 3/4 teaspoon pure vanilla extract 1/4 teaspoon kosher salt 1/3 cup heavy cream

Nutella Icing  1 1/4 cup confectioners' sugar, plus more if needed for added stiffness  1 cup Nutella   5 tablespoons unsalted butter, at room temperature   1/4 teaspoon pure vanilla extract   1/4 teaspoon kosher salt   1/2 cup heavy cream

Fluffy batter= fluffy cupcake

Creaming peanut butter frosting

Use a round 1/4 cup measure

Instructions

Cupcakes

1. Preheat the oven to 350 degrees F. Line cupcake pans with paper liners.
2. In a large bowl, cream the butter and 2 sugars with an electric hand mixer on high speed until light and fluffy, approximately 5 minutes. 
3. Lower the speed to medium, add the eggs 1 at a time, then add the vanilla and mix well. 
4. In a separate medium bowl, whisk together the buttermilk, sour cream, and coffee. 
5. In another medium bowl, sift or whisk together the flour, cocoa, baking soda, and salt. 
6. On low speed, add the buttermilk mixture and the flour mixture alternately in thirds to the mixer bowl, beginning with the buttermilk mixture and ending with the flour mixture. Mix only until blended. 
7. Push down on the sides with a rubber spatula, then fold the batter with a rubber spatula to be sure it's completely blended.
8. Divide the batter among the cupcake pans (1/4 cup measure or a rounded ice cream scoop per cupcake). 
9. Bake in the middle of the oven for 20 to 25 minutes, until a toothpick comes out clean. 
10. Cool for 5 minutes, remove from the pans, and allow to cool completely before frosting.

Frosting

1. Place the confectioners' sugar, peanut butter, butter, vanilla, and salt in a medium sized bowl.
2. With an electric mixer, mix ingredients on low until powdered sugar is combined.
3. Move to medium-low speed until creamy, scraping down the bowl with a rubber spatula as you work. For the nutella icing, the consistency will be thicker, almost like a very soft fudge. For the peanut butter icing, the consistency will be more like a traditional butter cream.
4. Add the cream and beat on high speed until the mixture is light, fluffy and smooth, and has increased in volume, like a store bought butter cream. (The nutella version may be slightly moister).