FOR THE CAKE:
1/2 cup butter, softened
1 1/2 cup sugar
2 eggs
1 1/2 cup flour
9 Tbsp unsweetened cocoa powder
1/2 tsp salt
1 tsp baking soda
1/2 tsp baking powder
1/2 cup brewed coffee, cooled
1/2 cup milk

FOR THE FROSTING:
1 cup butter, softened
8 cup powdered sugar
1/2 tsp peppermint extract
1/2 cup milk plus 2 Tbsp
11 oz dark chocolate chunks (62%cacao) or mini chocolate chips
1/8 tsp green food coloring gel

FOR THE GANACHE:
3/4 cup heavy cream
1 1/2 cup semisweet chocolate morsels
1/4 tsp peppermint extract