Preheat oven to 325 degrees.
Melt chocolate with shortening over warm water; Cool. Blend together eggs, sugar, vanilla and salt; stir in chocolate mixture. Stir in flour. Fold in walnuts.
Turn into well greased 8 inch square pan. Bake for about 40 minutes. Spoon jam over hot brownies; spread carefully. Let cool.
Spread chocolate glaze over brownies and top with chocolate dipped walnuts, if desired.
Cut into 12 bars.
Melt unsweetened chocolate. Blend in butter and corn syrup. stir in powdered sugar, milk and vanilla. Mix well.