chocolate cake to eat with the custard (recipe with the microwave)

ingredients (serves 4 or 6 people)
150 gr black chocolate
80 gr butter
3 large eggs
100 gr sugar
60 gr flour
10 centilitres milk
1 teaspoon of baking powder

First melt the chocolate and butter gently in a pan. Put the pan beside.
Beat the eggs with sugar.
Add flour, baking powder, milk and finally the melted mixture chocolate-butter
Grease a micro-proof baking dish and pour the mixture inside it
Microwave on high 8 minutes
Let stand 5 minutes; invert onto serving plate.
Sprinkle with icing sugar
Serve this cake with custard (recipe given on this blog)