Make the honey orange glaze

• In a saucepan over medium heat, combine the honey, brown sugar, orange marmalade and orange juice.
• Stir until the sugar dissolves and the glaze is smooth, tasting as you go.
• If it is too sweet, add lemon juice and a little salt.

Prepare the baking dish

• Arrange the orange slices and sliced onion in a shallow baking dish.
• Pour a little orange juice over them.

Add the ham and glaze

• Place the ham on top of the oranges and onion.
• Spoon the glaze all over the ham, working it into the cracks and crevices.

Bake and baste

• Bake at 165 °C (325 °F) for about 12 minutes per pound.
• Baste every 30 minutes with the juices from the bottom of the pan.
• Once the ham is caramelized, baste one last time and it is ready to serve.