1. Cream butter or margarine with sugar. Beat well.
2. Add one egg at a time, beating well after each. Add the melted Hershey bars.
3. Sift the flour, salt, and soda and add gradually to the other ingredients, alternately with the buttermilk.
4. Add vanilla, and mix well.
5. Bake in a greased, floured tube pan at 350 for 1 1/2 hrs or until tests done.