1. Preheat your oven to 275°F
2.  the ham, wrap it in aluminum foil and place it facing down on a shallow roasting pan
3. Put the ham in the oven to cook for 2 hours.
4. When it is 2 hours, take the ham out of the oven and preheat the oven again, this time to 425°F
5. Make the glaze for the ham. Add 3 tablespoons of pineapple juice to the glaze mix and cook over the stovetop in a saucepan until it comes to a boil
6. Pour the glaze onto the ham, and use a brush to brush the glaze into all the slices of the ham
7. Pop it back in the oven to caramelize for 8 to 10 minutes
8. After 10 minutes, take the ham out of the oven and allow it to rest for an additional 10 minutes.
9. Serve and enjoy your delicious ham.

The beautiful thing about Costco spiral ham is how easy it is to prepare, you would even get a shorter cook time if you follow all the instructions correctly. The pineapple juice contributes to the complex flavor of the glaze. If you would like to see other ham recipes, check out this video recipe.