These Portuguese custard tarts, or Pastéis de Nata, feature a flaky pastry shell filled with silky caramelized custard and a ribbon of bittersweet dark chocolate, perfect for Easter celebrations.
If edges brown too fast, cover loosely with foil halfway through baking. Stir custard constantly over low heat to avoid graininess. Chill puff pastry if too soft before cutting. Do not overmix chocolate into custard to maintain marbled effect. Can prepare custard a day ahead and refrigerate.
Keywords: Portuguese custard tarts, Pastéis de Nata, dark chocolate tarts, Easter dessert, custard tarts, flaky pastry, chocolate swirl