Chocolate Peppermint Cupcakes

 Ingredients:

1 Box Devil’s Food cake mix
Ingredients listed on box + 1 extra egg
1 cup Peppermint baking chips (plus extra for garnishing, if desired)
1 cup (2 sticks) salted butter, room temperature
1 tsp. vanilla
4 cups powdered sugar
5 tbsp. milk
¼ tsp peppermint extract

Preparation:

Preheat oven to 350 degrees. Prepare cake mix according to directions, adding an extra egg. Add peppermint baking chips. Pour into cupcake liners, filling them ¾ full. Bake for 25-30 minutes, or until toothpick inserted into center comes out clean.

While cupcakes are baking, beat together butter and vanilla using electric mixer. Mix in powdered sugar in one cup increments. Add milk and peppermint extract. You may use Wilton coloring for buttercream if desired (you should avoid using regular food coloring in buttercream). Frost cupcakes when they have fully cooled, and sprinkle with peppermint baking chips if desired.
by-http://www.bakingjunkie.com/2010/12/chocolate-peppermint-cupcakes/