4 (1 oz.) unsweetened chocolate squares
2/3 c. butter
2 tsp. vanilla
2 c. sugar
1/2 tsp. salt
4 eggs
1 c. nuts (opt.)
1 c. flour

Melt chocolate and butter together. Mix sugar and eggs together with mixer. Add melted chocolate and butter, then flour, vanilla, salt and nuts until well mixed. Bake at 350 degrees in greased 9"x13" pan 30 minutes or until dull on top and toothpick tests clean. Sprinkle powdered sugar on top after cooled and before cutting into squares.