Apple and Pear Turnovers

1 . Stage

In a large skillet, bring apple juice and maple syrup to a simmer over medium heat. Split vanilla bean lengthwise. Using the tip of a sharp knife, scrape seeds from the center into skillet; add bean. Cook until liquid has reduced slightly, 1-2 minutes. Add apples and pears; cook and stir until fruit is just tender, 7-9 minutes. Remove from heat; add lemon zest and juice. Cool completely. Remove vanilla bean pod.

2 . Stage

Preheat oven to 400°. On a lightly floured surface, unroll pastry sheets. Roll each sheet into a 12-inch square; cut each sheet into 4 equal squares. Spoon 1/4 cup apple mixture diagonally over half of each square to within 1/2 in. of edges. Moisten pastry edges with water. Fold 1 corner over filling to the opposite corner, forming a triangle; press edges with a fork to seal.

3 . Stage

Transfer to greased baking sheets. Brush tops of pastries with beaten egg; prick tops with a fork. If desired, sprinkle with coarse sugar and cinnamon. Bake until golden brown, 18-20 minutes. Remove from pans to wire racks. Serve warm or at room temperature.