Baked Brownies

My sis specially request for crust top brownies, so my search continues.

recipe from  Baked: New Frontiers In Baking (Matt Lewis and Renato Poliafito) I halves it to 2 eggs recipe for my 8" pan 130g Chocolate 90g Butter 100g sugar 60g brown sugar 2 eggs 1 tsp vanilla 55g flour 1 Tbs cocoa powder Method Melt chocolate and butter in double boiler Whisk in both sugar Whisk in eggs until just combined, do not over beat Fold in flour and baking powder Bake at preheated 170C for 25 min

Note:
I'm so happy the crust top form in this brownies. 

The brownies is very soft (melt in your mouth)