Dust the cut sides of the oranges with brown sugar and place sugar side down on the grill.
Cook for two minutes or until charred.
In a saucepan place cranberry, the juice of the charred oranges, apple, lime juice, sugar and simmer and for fifteen minutes stirring regularly and mashing the cranberries while cooking with a whisk.
Taste for the required sweetness and adjust if more sugar is required.
Add the orange liqueur.
Cook for five more minutes put aside and refrigerate.
Note: Cooking times and temperatures will vary depending on the size and type of your barbeque.