Mama's Million Dollar Fudge

1. Line a 13X9 inch pan with foil and grease the foil with 4 teaspoons of butter. 2. In a large bowl, place the marshmallow creme, walnuts, chocolate chips and chopped sweet chocolate in the order listed. Top with remaining butter. Set aside. 3. In a heavy saucepan, combine the milk, sugar and salt. Cook over low heat, stirring constantly, until mixture reaches 235 degrees (soft ball stage). Pour over mixture in bowl and stir. Immediately spread into prepared pan. Cool completely. 4. Using foil, lift the fudge out of pan. Discard foil, cut fudge into 1 inch squares. Store in airtight containers.