1. Preheat the oven to 375°F.

2. Unroll the puff pastry and place it on a lightly greased baking sheet.

3. Arrange the pear slices on top of the puff pastry.

4. In a small bowl, mix together the crème fraiche, sugar, and cinnamon.

5. Spread the crème fraiche mixture over the pears.

6. Bake for 20-25 minutes, or until the puff pastry is golden brown and the pears are tender.

7. Serve warm and with French-style Ice Cream