Mix the baking mix and sugar together in a bowl.
Stir in the orange juice and zest just until blended.
Gently fold in the cranberries.
Put the dough onto a board that has been lightly floured and knead 3-4 times, or just enough to ensure all ingredients are well blended.
Pat dough down to about ½ inch thick and shape into a circle or disc, approximately 8 inches across.
Cut with a sharp knife or a bench scraper into 8 wedges and place the wedges on a parchment paper lined baking sheet.
Chill for 15 minutes.
Bake 12-14 minutes at 425 degrees, or until lightly browned.
If glazing, let cool 2-3 minutes before adding glaze. Serve warm.