Decadent Chocolate Mint Brownies

DECADENT CHOCOLATE MINT BROWNIESBROWNIE BASE:4 oz. good quality unsweetened chocolate2/3 c. butter2 c. brown sugar3 eggs1 t. vanilla1 ¼ c. flour1 t. baking powder1 t. saltPEPPERMINT LAYER:2 ½ c. powdered sugar2 ½ T. heavy cream10 T. butter, room temp1 t.…