01 - Preheat your oven to 230°F (110°C). Line two large baking sheets with parchment paper.
02 - Wash and core the pears. Slice them very thinly, approximately 2 mm thick, using a mandoline or a sharp knife. If using, lightly brush the pear slices with lemon juice to prevent browning.
03 - Arrange the pear slices in a single layer on the prepared baking sheets, ensuring they do not overlap.
04 - In a small bowl, combine the granulated sugar and ground cinnamon. Evenly sprinkle this mixture over the pear slices.
05 - Bake for 1 hour. Carefully flip each pear chip. Continue baking for an additional 30–45 minutes, or until the chips are golden and crisp.
06 - Remove from the oven and allow the pear chips to cool completely on the baking sheets. They will become crispier as they cool.
07 - Store the cooled pear chips in an airtight container for up to 1 week.