I found this recipe at instructables.com, which was an adaptation of a recipe from Smitten Kitchen. The ingredients are as follows...
For the cupcakes:
- 1c Guinness beer
- 1c butter, melted
- 3/4 c cocoa powder
- 2 c flour
- 2 c sugar
- 1 1/2 tsp baking soda
- 1 tsp salt
- 2 eggs
- 3/4c sour cream
A little extra step at this point would be to enjoy the rest of the beer (or in my case, I had my Betrothed take care of it).
In a separate bowl, mix together flour, sugar, baking soda, and salt.Then stir in the eggs and sour cream. Add the chocolate mixture and mix well.
Spoon the batter into the cupcake pans. I actually had a bit of extra batter that I poured into a 6" pan. Bake all for about 17 minutes.
For the Bailey's buttercream, I mixed up my basic vanilla buttercream recipe and added an entire mini bottle of Bailey's (of course you can add more to taste, but make sure your buttercream isn't too soupy!). The Bailey's mixes well by hand, so no need to bust out the Kitchenaid if you already have some vanilla buttercream lying around.
A bit of shamrock sprinkles and voila! (what would be the Irish equivalent of that...?)
Once these were baked, the Guinness flavor was hard to find. However, this recipe makes delicious, fluffy chocolate cupcakes! I think next time, I could add a Guinness glaze or use the Jameson whiskey ganache filling from the original recipe, just to give them a little kick.