1/2 c. butter
2 env. (2 oz.) premelted, unsweetened chocolate
1 c. sugar
3 eggs
2/3 c. instant blending flour
1 tsp. vanilla extract
1/4 tsp. salt
1/2 c. chopped nuts, if desired

Melt butter in a pan and then add ingredients in the order listed. Pour in a greased 9x9 pan and bake at 350 degrees for 35 minutes.