ingredientsfor the cookies: 8 ounces very soft but 2 cups powdered sugar 4 tablespoons half and half or milk, maybe more 1/4-1 teaspoon peppermint extract blue paste food coloring i used wilton delphinium blue for the buttercream piping: 1 tablespoon very soft butter 1 cup powdered sugar 1 1/2-2 tablespoon