Double Dark Chocolate Chunk Brownies

A while back I bought some 88% cocoa chocolate bars. The boys like dark chocolate but did not care for this particular brand. Today I decided to make some brownies using them. Now the boys like eating this chocolate! Enjoy~

1 1/2 c. flour
2 c. sugar
1/2 c. cocoa
2/3 c. melted butter
4 eggs, beaten
1 tsp. salt
2 tsp. vanilla
1/2 c. chopped pecans
3 oz. dark chocolate bar, chopped

Mix all ingredients until moistened. Pour into greased 9 x 13 pan. Bake at 350* for 25-30 minutes.