Everyone will love this icing with the taste of marshmallow. So easy to prepare, you´ll want to make it for every cake you decorate!
In large bowl, beat butter with electric mixer until creamy. Gradually add sugar and salt; mix well. Add marshmallow cream and vanilla; blend well. Use immediately or refrigerate, covered, up to 1 week; bring to room temperature and lightly beat before using.
Makes about 5 1/2 cups icing.