When do you put on glaze for a Kirkland spiral ham?

You should apply the glaze to a Kirkland spiral ham during the last 20 to 30 minutes of baking. This allows the glaze to caramelize and enhance the flavor without burning. Make sure to increase the oven temperature slightly or cover the ham loosely with foil if needed to prevent over-browning. Always follow the specific instructions provided on the packaging for best results.