01 - Preheat the oven to 375°F (190°C).
02 - Arrange the pear halves, cut side up, in a baking dish just large enough to hold them snugly.
03 - In a small bowl, combine the grated ginger, cinnamon, nutmeg, vanilla extract, lemon zest, honey, and brown sugar. Mix well.
04 - Spoon the ginger mixture over the pears, then drizzle with lemon juice and apple cider (or water).
05 - Cover the dish with foil and bake for 20 minutes.
06 - Remove the foil, baste the pears with the juices, and continue baking uncovered for another 10 minutes, until the pears are tender and golden.
07 - Serve warm, sprinkled with toasted nuts and a dollop of Greek yogurt or ice cream, if desired.