2 c  Unsifted flour
1/4 ts Salt
6 oz Unsweetened chocolate
8 oz Butter
1 ts Vanilla extract
2 c  Sugar
1 c  Light brown sugar
2/3 c  Light corn syrup
6    Eggs
3 c  Pecans [or walnuts]

Adjust a rack one-third up from the bottom of the oven and preheat to
350 degrees F. Grease a 15 1/2 by 10 1/2 by 1-inch jelly roll pan.
Line it with a large piece of wax paper, butter the paper, and dust
it lightly all over with flour. Invert the pan to shake out excess
flour. (I use parchment sprayed with Pam and skip the flour.)

Measure the flour before sifting, then sift it together with the salt
and set aside. Melt the chocolate in the top of a small double boiler
over hot water on moderate heat. Stir until smooth, remove the top of
the double boiler, and set aside.

In the large bowl of an electric mixer cream the butter. Add the
vanilla and the granulated and brown sugars. Beat to mix well. Add
the corn syrup and beat until smooth. Add the eggs one at a time,
beating until smooth after each addition. Beat in the melted
chocolate. On low speed, gradually add the flour, beating until
smoothly mixed. Stir in 2 cups of the nuts.

Turn the mixture into the prepared pan and spread to make a smooth
layer. (The pan will be filled to the top.) Sprinkle the remaining
cup of nuts over the top.

Bake for 40 to 45 minutes until a toothpick inserted in the center of
the cake comes out clean but not dry.

Cool in the pan for 30 minutes. Then cover with a large rack or cookie
sheet and invert. Remove the pan and the paper. Cover with a large
rack and invert again, leaving the cake right side up to cool
completely.

The cake is easier to cut if it is chilled first [but tastes wonderful
still a little warm!]; place it in the freezer or refrigerator until
it is quite firm. Or cover the cake with aluminum foil or plastic
wrap and let it stand overnight at room temperature. Slide the cake
onto a cutting board [a really tough trick unless its frozen]. Use a
long, thin, sharp knife or a finely serrated one to cut it into bars.