10 oz Unsweetened chocolate
2 1/2 c  Butter or margarine
10    Eggs
5 c  Sugar
2 ts Salt
4 ts Vanilla
4 c  Sifted flour
1 1/3 c  Coarsely chopped walnuts

Melt chocolate with butter in top of double boiler over hot water. Beat
eggs, sugar, salt and vanilla in large mixer bowl. Add melted chocolate
mixture. Mix until blended. Add flour gradually while beating on low speed.
Mix in nuts. Turn into 2 greased 18- x 12-inch baking pans, spreading
mixture evenly in pans. Bake at 350F 20 to 25 minutes, being careful not to
overbake. While still warm, cut into squares.