4 cups powdered sugar
3 ounces cream cheese, room temperature
1/4 cup butter, room temperature
3 Tablespoons milk
1/4 teaspoon vanilla extract
3/4 teaspoon peppermint extract
8-10 drops green food coloring (optional)
DRIZZLE (optional):
1/2 cup semi-sweet chocolate chips
1 teaspoon vegetable oil
http://www.forkinthekitchen.com/peppermint-brownies/