Heat oven to 400°F. Coat a 2-quart baking dish with nonstick cooking spray.
Heat apple juice in a medium-size saucepan. Add raisins and cook 1 minute. Add apple pie filling and bring to a simmer. Stir in walnuts. Spoon filling into prepared baking dish.
Unroll puff pastry on a lightly floured surface. Cut out 12 circles with a 2-inch cutter. Place circles over top of apple mixture and brush with egg-water wash. Sprinkle with sugar.
Bake at 400°F for 20 minutes, until pastry is browned. Remove from oven; cool slightly.