Mix well. Do not overbeat. Transfer the batter in tin and bake at 180C for 15-20min. Every oven is different. Cook in Cooker or kadahi as you bake cake.Once it's done just check with a tooth pick and it shd come out with some crumbs and not all clean as cake. Cool on wire rack and then chill slab of brownie in fridge and then cut into pieces chilling will give you clean brownie pieces. Always use muffin liners if using brownie tray.