Preheat oven to 350F. Butter a deep baking pan.

Core out the bottom of each pear and put a teaspoon of honey inside.

Place pears right side up in the baking pan. Pour water into the pan and drizzle the remaining honey all over the pears. Put the cloves into the flesh of the pears carefully. Put the star anise and vanilla in the water.

Roast the pears in the oven for about 2.5 hours. Remembering to baste them with the syrup every 15-20 minutes.

Transfer the pears out of the baking pan and cool. Reduce the syrup, if desired, in a saucepan on medium heat. Pour it over the pears and serve them chilled.