1 sheet (1/2 lb.) frozen puff pastry, thawed
1 Granny Smith apple
2 tbsp. sugar
1/4 tsp. cinnamon
1 tbsp. cold unsalted butter, cut into bits
2 tbsp. apricot jam, heated and strained
Vanilla ice cream or whipped cream as an accompaniment

Roll out the pastry 1/8 inch thick on a lightly floured surface, cut out two 7 inch rounds and transfer them to a baking sheet. Peel, halve lengthwise, and core the apple, slice it thin crosswise, and arrange the slices, overlapping them slightly, on the pastry rounds.

In a small bowl stir together the sugar and the cinnamon, sprinkle the mixture evenly over the apples and dot the tarts with butter. Bake the tarts in the middle of a preheated 400 degree oven for 25 minutes, or until the pastry is golden brown. Transfer the tarts to a rack, brush them with the jam and serve them warm with the ice cream. Serves 2.