Preheat oven to 200°C.

Brush madeleine pan with butter and keep aside.

In a bowl, combine together, butter, milk, sugar and vanilla.

Mix flour and baking powder in another bowl.

Add flour mix to the milk butter sugar mix and mix to form thick batter.

Divide the batter between the moulds in the pan.

Bake in preheated oven for 15 minutes.

Remove from oven and immediately flip the pan and transfer the madeleines to the wire rack.

Let them cool a bit.

Melt chocolate, dip the corner of each madeleine in chocolate and add some sprinkles on the chocolate.

Let them set on wire rack.

Serve them immediately.