Found this recipe from a cookbook called "Best Recipes". It says that the enthusiasn for this recipe has been going strong since Kraft developed it some 15 yrs. ago.

Foolproof Meringue

3 egg whites
Dash of salt
1 cup ( 1/2 of 7--ounce jar) Kraft Marshamallow Creme

Beat egg whites and salt until soft peaks form. Gradually add marshmallow creme, beating until stiff peaks form. Spread over pie filling, sealing to edge of crust. Bake at 350 degrees 12 to 15 minutes or until lightly browned. Cool.