Melt the cooking chocolate over a bain-marie and add the milk slowly, stir until it's mixed. Let it cool

Now use the mixer to beat the eggs and sugar until it's frothy, add the melted chocolate then add the oil

Add the flour as well as cocoa powder gradually, lastly add pinch of salt and baking powder

Place the batter into a square baking pan, spread the peanut butter on top, sprinkle it with choco chips or chopped peanut (optional)

Bake for 45 min approx. In 180° or until the brownie is cooked

Cut it according to your liking and serve