1. Heat oven to 350°F.
2. Grease 8 inch square baking pan.
3. Place butter in microwave bowl, microwave at HIGH for 30 seconds or until melted.
4. Stir in sugar and vanilla.
5. Add eggs, one at a time, beat well.
6. Add cocoa, beat until well blended.
7. Add flour, baking powder and salt.
8. Set aside 2 TBS of the baking pieces.
9. Stir in remaining baking pieces into batter.
10. Spread batter in prepared pan.
11. Bake for 30-35 minutes or until begin to pull away from sides of pan.
12. Cool completely.
13. Place remaining 2 TBS of baking pieces in microwave bowl and heat on HIGH for 15 seconds or until melted.
14. Stir and drizzle over brownies.
15. Cut into bars.