Remove the top of the rind from the cheese using a serrated knife, and discard the rind. Place the cheese, cut side up on an oven safe plate or bowl. Just make sure to use a larger plate or a bowl so your cheese doesn't start oozing off the plate like mine is in the above photo.
Bake brie for 10 minutes. Remove from the oven and top with the cranberry sauce. Bake for an additional 5 minutes, or until the cheese is soft and warm.
Sprinkle the top with orange zest and toasted walnuts. Serve immediately with crackers or sliced baguette.