To remove seeds from a vanilla bean, cut the bean in half lengthwise. Run the blade of a knife across the inside of the bean, gathering seeds on the edge of the knife.
Place frosting in large resealable freezer bag. Cut off one bottom corner to create about a 1-inch opening. Pipe frosting in a circular motion over cupcakes for an extra-special finish.
This vanilla-bean frosting would be wonderful on chocolate cake as well.
Serve these cupcakes with a cup of coffee or a latte.