Brown butter
In a bowl combine the brown butter and vegetable oil
sift in coca powder, sugar, espresso powder in the warm butter.
Mix those vigorously (for a shiny crackly top)
Add in the eggs, vanilla, salt extract continue to whisk vigorously.
Add the half of the chocolate chips
Gently mix in the bread flour and baking powder.
Line a baking tray with parchment paper and pour mixture in the tray.
Sprinkle the rest of your chocolate chips on top.
Bake in a preheated oven in 350 F for 25-35min. Depending on desired doness