Mighty Good Squares

1/2 c. butter
1/2 c. white sugar
1 c. flour
2 squares unsweetened melted chocolate.
2 eggs (beaten)
1 cup brown sugar
1/2 tsp. baking powder
2 tbsp. flour (second amount)
1 tsp. vanilla
2 1/2 c. icing sugar
1 tbsp. butter (second amount)
1/3 c. butter (third amt.)
small amount of milk

1. Mix the first four ingredients and spread in an 8 in. square cake pan.
2. Mix the eggs, flour (second amt.), salt, brown sugar, baking powder and vanilla and spread on top of the above mixture.
3. Bake at 350 degrees for 25 minutes or until done.
4. Make icing with butter (third amt.), icing sugar and enough milk to make a spreadable icing.
5. Ice the squares when cool.
6. Melt chocolate and butter (second amt.) over low heat and drizzle over squares.