* 3 cups powdered sugar
* 6 tablespoons butter, softened or 3 tablespoons hot heavy cream
* 5 teasoons milk
* 1.5 teaspoon vanilla
* 1/4 teaspoon salt
In a medium bowl, beat powdered sugar and butter or heavy cream together at medium speed. Add milk, vanilla and salt. Beat until smooth. Add more powdered sugar if necessary.
Good on Cookie Cutter Sugar Cookies.
Joy of Cooking