This is a cake recipe I found a few months ago. I've made it a few times and it's always a hit so I thought I would share. Haven't tried substituting my own stout yet but I'm sure it would be delicious!
1 cup Guinness
1 stick + 2 tbsp unsalted butter
0.75 c unsweetened cocoa
2 c sugar
0.75 c sour cream
1 tbsp vanilla extract
2 c flour
2.5 tsp baking soda
8 oz cream cheese
1.25 c powdered sugar
0.5 c heavy cream
Preheat oven to 350 F and butter a 9" springform pan.
In a large saucepan pour in Guinness and add butter. Heat until melted then whisk in cocoa and sugar.
Beat sour cream with eggs and vanilla then pour into beer mixture.
Finally, whisk in flour and baking soda. Pour batter into springform pan and bake 45-60 minutes.
Cool completely. Cake will be very moist. Prepare frosting (see below), ice the cake so it resembles the frothy top of the famous pint. Enjoy!
Whip cream cheese until smooth. Sift in powdered sugar and beat together. Add cream and beat until spreadable. (I like to add some guinness to the frosting, about 0.25 cup.)