Prepare. Preheat the oven to 425 F (220 C). Mix together the mascarpone and vanilla. Butter a baking dish with 1 teaspoon of room-temperature butter. Peel, halve, and scoop out the cores of the pears, coating the exposed surfaces in lemon juice.
Bake the pears. Put ½ teaspoon room-temperature unsalted butter into each scooped-out pear. Brush with melted butter, then turn over and brush the backs with butter. Bake face-down for about 25 minutes, then turn over and bake face-up for about 10 more minutes or until fork-tender.
Make the honey drizzle. While the pears bake, put the honey and water into a small pan. Crush the cardamom pods to release the seeds, then add. Heat for about 10 minutes on medium-low, not letting the honey go above a gentle simmer. Remove from the heat and set aside to steep.
Finish and serve the pears. When the pears are fork-tender, remove from the oven and transfer to a serving dish or individual plates. Strain the infused honey. Fill each with a scoop of vanilla mascarpone, then drizzle the honey on top. Serve immediately.