I found those recipies in th Key Gourmet Cd-Rom. I haven't tried them but I hope they help.

Mix together sour cream and margarine, bring to full rolling boil, boil to soft ball stage. Remove from heat, add chocolate until melted, add marshmallow creme and nuts, put in greased 8 or 9 inch pan, cool at room temperature, cut in squares. Makes 2 1/2 pounds.