1pre-heat oven 350. line a 9 inch sqaure pan with foil. making sure some of the foil hangs over the sides. spray with pam
2chop the bitter sweet chocolate into small pieces.place choc,butter and cocoa powder in microwave safe bowl.microwave on high til choc and butter r melted.stir to combine and set aside.
3place sugar in med bowl. add the choc mixture, stirring to combine. add eggs 1 at a time, stirring after each one is added. stir in vanilla. sift flour and baking powder. mix well.
4spread the batter into prepared baking pan. place in pre-heated oven for 30 mins.
5sprinkle the choc chips over brownies. return brownies to oven for 1 min. allow pan to sit for 1 min.lift brownies out of pan.using foil as handles. spread the choc chips over the brownies for a marbled effect. [i guess thats both dark and white choc chips so when melted together it forms the marbled effect] let cool b4 cutting into bars
6for another effect:a mocha buttercream frosting quickly turns these brownies into individual desserts. mix 1/2 cup butter with 1 cup powdered sugar. flavor with 1-2 teasps instant coffee and 1 teasp vanilla. cut brownies in 1/2[2 make a sandwhich effect]put the mocha frosting on bottom layer then top with other 1/2 of brownie
7guys me i'd just frost the brownie squares with it, cos u r leaving the marbled part out for this one. hope u like it