Remove the chilled dough from the refrigerator and allow it to soften on counter for 15 minutes so it will be easier to roll. Dust a clean surface and rolling pin with flour. Unwrap the dough and cut each disk in half. Place one half on the floured surface and begin rolling into a large circle, about ½-inch thick and 6 inches in diameter.
Place the rolled dough into a 4½-inch tart dish with a removable bottom. Don’t stretch the dough. If the dough is stretched, it will shrink while baking. Fold over the excess dough and push it into the flutes of the tart dish to create thick edges. Cut off the excess dough that hangs over the top. Repeat the process with the other dough halves. Place the shells into the freezer for 10 minutes to chill before baking. Preheat the oven to 375°F.
Remove the shells from the freezer. Cut 4 (5-by-5-inch) squares of foil and place on top of the unbaked shells. Place pie weights or dried beans on top of the foil to weigh it down and prevent the pie crusts from rising while baking. Bake for 15 minutes in the preheated oven. Remove from the oven and discard the foil (weights or beans can be reserved for a future use). Gently prick the bottom of the dough with a fork. Bake for another 18 minutes until the bottom begins to turn golden brown. Remove from the oven and cool completely (at least 30 minutes) before filling.
Once the pastry cream has chilled and the shells have cooled, distribute the pastry cream evenly among the 4 shells. Using the back of a spoon, spread the filling into the tart shell, creating a smooth, flat layer.