I love these cupcakes for a fun St.Patrick's day treat. Guiness Irish Stout is highlighted in this moist chocolate cake and mocha frosting!
What you will need
11.2 oz Guinness Stout
1 cup AP Flour
1/2 cup Cocoa Powder
1 and 1/2 tsp Espresso Powder
3/4 tsp Baking Soda
1/4 tsp Salt
1/2 cup Canola Oil
1 cup packed Brown Sugar
2 Eggs
3/4 cup Sour Cream
2 tsp Vanilla Extract
MOCHA GUINNESS BUTTERCREAM
2 TBSP REDUCED GUINNESS
2 tsp Espresso Powder
1 and 1/4 cups Unsalted Butter
4 cups Confectioner's Sugar
2 Tbsp Cocoa Powder
1 Tbsp Milk
1 tsp Vanilla Extract
pinch of salt, to taste
(Nutritional facts 440 calories, 24.78 g fat, 51.42 g carbohydrates, 4.4 g protein, 152 mg cholesterol, 254 mg sodium)How to cook
1
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MSZyZW5kZXJDbGlwU2l6ZT0x.jpg)
2
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MiZyZW5kZXJDbGlwU2l6ZT0y.jpg)
Gather and portion all ingredients.
3
![in half, about 10-15 minutes.](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9NCZyZW5kZXJDbGlwU2l6ZT0y.jpg)
Pour the beer into a sauce pan and simmer on the stove until it is reduced in half, about 10-15 minutes.
4
![teaspoons of espresso powder while warm to dissolve. Set this aside. You will use the leftover reduced beer for the cake.](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9NiZyZW5kZXJDbGlwU2l6ZT0x.jpg)
Add two tablespoons of the reduced beer to a small bowl and mix in the two teaspoons of espresso powder while warm to dissolve. Set this aside. You will use the leftover reduced beer for the cake.
5
Set oven to 350°F
6
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9OCZyZW5kZXJDbGlwU2l6ZT0y.jpg)
Add the flour, espresso powder, and cocoa powder to a large mixing bowl.
7
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MTAmcmVuZGVyQ2xpcFNpemU9MQ==.jpg)
Add the baking soda and salt.
8
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MTEmcmVuZGVyQ2xpcFNpemU9MQ==.jpg)
Whisk all the dry ingredients together.
9
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MTImcmVuZGVyQ2xpcFNpemU9MQ==.jpg)
Mix the wet ingredients in a seperate bowl starting with the sour cream.
10
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MTMmcmVuZGVyQ2xpcFNpemU9MQ==.jpg)
Crack the eggs and add to the bowl with the sour cream.
11
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MTQmcmVuZGVyQ2xpcFNpemU9Mg==.jpg)
Add the brown sugar, canola oil, and vanilla to the mixture.
12
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MTYmcmVuZGVyQ2xpcFNpemU9Mg==.jpg)
Mix until the ingredients are fully incorporated and smooth.
13
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MTgmcmVuZGVyQ2xpcFNpemU9Mg==.jpg)
Stir the wet mixture into the dry mixture until just combined.
14
![ng is removed. Stir util just combined.](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MjAmcmVuZGVyQ2xpcFNpemU9MQ==.jpg)
Pour the stout beer reduction left over after what is needed for the frosting is removed. Stir util just combined.
15
![12 cups.](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MjEmcmVuZGVyQ2xpcFNpemU9Mw==.jpg)
Line a cupcake pan with paper liners and evenly fill the batter between the 12 cups.
16
![a toothpick inserted in the middle comes out clean.](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MjQmcmVuZGVyQ2xpcFNpemU9MQ==.jpg)
Place the cakes in the oven set to 350 and bake for 19-20 minutes or until a toothpick inserted in the middle comes out clean.
17
![, scraping down the sides of the bowl to fully incorporate the butter. Mix until light in color and very fluffy! Don't skimp on this step!](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MjUmcmVuZGVyQ2xpcFNpemU9Mw==.jpg)
Beat the butter with the paddle attachment in a stand mixer for 3-5 minutes, scraping down the sides of the bowl to fully incorporate the butter. Mix until light in color and very fluffy! Don't skimp on this step!
18
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MjgmcmVuZGVyQ2xpcFNpemU9Mg==.jpg)
Sift the powdered sugar into the butter.
19
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MzAmcmVuZGVyQ2xpcFNpemU9Mg==.jpg)
Sift the cocoa powder in as well.
20
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MzImcmVuZGVyQ2xpcFNpemU9Mg==.jpg)
Add the milk and start to mix into the butter.
21
![the sides of the bowl as needed to incorporate everything.](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MzQmcmVuZGVyQ2xpcFNpemU9Mg==.jpg)
Add in the reduced stout and espresso powder mixture and whip. Scrape down the sides of the bowl as needed to incorporate everything.
22
![e rack to cool.](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MzYmcmVuZGVyQ2xpcFNpemU9MQ==.jpg)
When the cupcakes are cooked through remove from the pan and place on a wire rack to cool.
23
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MzcmcmVuZGVyQ2xpcFNpemU9MQ==.jpg)
Add a star tip to a piping bag and fill with frosting.
24
![the cupcake. You can also spread the frosting with a knife or spatula!](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9MzgmcmVuZGVyQ2xpcFNpemU9Mw==.jpg)
Once the cupcakes are fully cooled, pipe in a spiral towards the middle of the cupcake. You can also spread the frosting with a knife or spatula!
25
![](https://craftlog.global.ssl.fastly.net/m/ve/b64-9094761-1615927285022-b3B0aW1pemVGb3I9ZGVza3RvcGhoZCZsYW5ndWFnZVRhZz1lbi1VUyZyZW5kZXJDbGlwU3RhcnQ9NDEmcmVuZGVyQ2xpcFNpemU9MQ==.jpg)
Feel free to add your favorite sprinkles or toppings.
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