Melt dark cooking chocolate, butter and cooking oil together with double boil method
Beat eggs and sugar with hand whisk, until mix well. If u want to get shiny crust, beat with hand mixer for 5 minutes.
Mix in the dark chocolate/butter/oil mixture. Mix well
Lastly, add in sieved flour and chocolate powder to the mixture and mix well. Batter will be thick and heavy
Prepare your pie crust, add the brownie batter. Bake 180 degree celcius, about 25 minutes.
Ready to serve