Draw a circle on thee top rind of the cheese, leaving about 3mm of edge.
With the same knife, remove the rind within that circle to expose the soft cheese below. Do it carefully so that you only remove rind.
Bake the cheese in a preheated oven at 180°C/350°F for 20-25 minutes or until the centre is liquid (you can check with a knife).
Serve immediately with the jam on top. Do it quickly since the Brie solidifies back pretty quickly.