Melt butter in a large mixing bowl in microwave. Add sour cream and vanilla and mix with a whisk. Add eggs one at a time stirring well after each one.
Add 1/3 of the cake mix and stir, then half of the buttermilk, and stir. Repeat and end with the last 1/3 of the cake mix.
Full paper lined cupcake pan with batter, about 2/3 full. Bake at 350 for 14-16 minutes, or until just done. Remove from oven and fill immediately with ganache
Melt chocolate with cream using your preferred method. Stir in powdered sugar and peppermint until smooth. Use a squeeze bottle to fill warm cakes
Frosting
Let cakes cool thoroughly before frosting
Beat ingredients together until well mixed and frost cupcakes. Garnish with a large piece of an Andes Chocolate Mint
Keyword chocolate cupcakes, cupcakes, peppermint ganache, St. Patrick's Day