Preheat oven to 375 degrees F.
On a lightly floured surface roll out dough into a 13-inch round and fit it into a 10-inch tart tin with a removable fluted rim, trimming the excess. Arrange the apples decoratively on the pastry shell, overlapping them. Sprinkle the sugar on top of the apples, top with butter slices and bake in the middle of the oven for 45 minutes or until the crust is cooked through and the apples are golden. Brush with the heated apricot jam while the tart is still hot. Serve each portion with a small scoop of ice cream or a small spoonful of whipped cream.
Cut butter into 1/2-inch cubes.
To blend by hand: Blend together flour, butter, and salt in a bowl with your fingertips or a pastry blender until most of mixture resembles coarse meal (roughly pea-size lumps). Drizzle 2 tablespoons ice water evenly over and gently stir with a fork until incorporated.
To blend in a food processor: Pulse together flour, butter, and salt in a food processor until most of mixture resembles coarse meal (roughly pea-size lumps). Add 2 tablespoons ice water and pulse 2 or 3 times, or just until incorporated.
Test mixture: Gently squeeze a small handful: it should hold together without crumbling apart. If it doesn't, add more ice water, 1 tablespoon at a time, stirring or pulsing 2 or 3 times after each addition until incorporated (keep testing). If you overwork mixture or add too much water, pastry will be tough.
Form dough: Turn out onto a work surface and divide into 4 portions. With heel of your hand, smear each portion once in a forward motion to help distribute fat. Gather dough together and form it, rotating it on work surface, into a disk. Chill, wrapped in plastic wrap, until firm, at least 1 hour.
Yield: 1 (9-inch) pie crust or a 10 to 11-inch tart crust
Recipe courtesy of Gourmet Magazine