Ingredients
18 ounces white chocolate baking bar, chopped
1 (3 ounce) pkg. cream cheese, softened
1 1/2 cups butter, cut in pieces

Method:
In a heavy saucepan, melt chocolate over low heat. Cool until slightly warm.
In a large mixing bowl, beat cream cheese with an electric mixer until smooth. Add butter; beat until fluffy. Gradually add cooled chocolate, beating until well blended.
Makes enough frosting for a 9-inch 3-layer cake or a 17 1/2x11 1/2-inch sheet cake. Refrigerate.

Note from source: Three ingredients -white chocolate, cream cheese and butter - combine in this fudge-like frosting. It's heavenly!

Source: Midwest Living, December 1997