2 oz. unsweetened chocolate, melted
1/2 c. butter
1 c. packed brown or white sugar
3/4 c. all-purpose flour
2 eggs
1/2 tsp. baking powder
1/2 tsp. vanilla
1/4 tsp. salt
1/2 c. chopped nuts, optional

Microwave chocolate, butter and sugar at medium setting for 2-4 minutes. Add remaining ingredients. Beat until well blended. Spread in 8x8 dish. Microwave on high 4-7 minutes or until done. Rotate dish 1/2 turn after 2nd, 4th and 5th minutes. Cool and frost.