I thought this cake sounded like a better use of the liquor, and the flavor did not disappoint. I enjoyed making the frosting- it's like making a pudding and whipping butter in. The chocolate ganache helps balance out all the mint, and made a lovely garnish.
For the Creme De Menthe Buttercream
First, make your favorite chocolate recipe, or used the Baked recipe I posted for the Sweet and Salty Cake.
2 1/4 cups sugar
1/2 cup AP Flour
2 1/4 cups milk
1/2 cups heavy cream
4 1/2 sticks unsalted butter, soft but cool, cut into pieces
2 T creme de menthe (OR 1 T vanilla and some green food coloring)
2 1/4 t peppermint extract
Baked suggests using chocolate wafer cookies for garnish, too.
In a medium heavy bottomed saucepan, whisk the sugar and flour together. Add the milk and cream and cook over medium heat, whisking occasionally. (Be careful the milk mixture doesn't burn on the bottom). Cook until the mixture has come to a boil and thickened, 10-20 minutes.
Transfer to the bowl of an electric mixer fitted with the paddle attachment. Beat on high speed until cool. Reduce speed to low and add the butter, one T at a time; mix thoroughly until incorporated. Increase the speed to medium high and beat until the mixture is light and fluffy.
Add the creme de menthe and peppermint extract and mix until combined.
Chocolate Ganache
6 oz dark chocolate
1/2 cup heavy cream
1 T creme de menthe
1/2 t peppermint extract (I omitted the flavorings)
Bring the creme to a boil in a saucepan, then pour over the chocolate in a heat proof bowl. Let the cream sit for 2 minutes, then stir until smooth. Add the flavorings.