- 1 lb. store-bought frozen puff pastry, thawed
- 1 egg, beaten
- 1 jar (30.5 oz.) pecan pie ﬁlling
- Boiling water, as needed
- 3 eggs, lightly beaten
- 4 oz. bittersweet chocolate, cut into small pieces
- Lightly sweetened whipped cream for serving
Position a rack in the lower third of an oven and preheat to 400°F.
Line the tart shells with parchment paper or aluminum foil and fill with pie weights. Bake the tart shells until the edges begin to brown, about 15 minutes. Carefully remove the parchment and weights and continue baking until the centers are golden, 7 to 10 minutes more. Transfer the pans to a wire rack and let the tart shells cool completely, about 30 minutes. Brush the shells with the beaten egg. Reduce the oven temperature to 325°F.
Remove the lid from the pecan pie filling jar. Place the jar in a large heatproof bowl and pour enough boiling water into the bowl to come three-fourths of the way up the sides of the jar. Let stand for 15 minutes.
Carefully pour the filling into another large bowl, add the eggs and stir until well combined. Stir in the chocolate. Divide the filling between the tart shells. Bake until the filling is puffed and just set, 15 to 20 minutes.
Transfer the pans to the wire rack and let the tarts cool completely, about 2 hours, before serving. Accompany each slice with a dollop of whipped cream.