3 1/2 sticks butter
8 oz. unsweetened chocolate
6 eggs
4 c. sugar
2 tsp. vanilla
2 c. flour
1/2 tsp. salt
1 tsp baking powder
2 c. chopped walnuts (optional)
1 (12 oz.) pkg. chocolate chips

Melt over low heat butter and chocolate. Beat eggs, sugar and vanilla until fluffy. Add chocolate mixture into egg mixture. Fold in flour, salt and baking powder. Add chopped nuts and chocolate chips. Pour into two well greased 9 x 13 inch pans. Bake at 350 degrees for 40-45 minutes. Cut into squares when cool.